{"id":1716,"date":"2021-07-23T10:45:13","date_gmt":"2021-07-23T05:15:13","guid":{"rendered":"http:\/\/mcqbooks.com\/?p=1716"},"modified":"2022-03-06T18:49:06","modified_gmt":"2022-03-06T13:19:06","slug":"ncert-solutions-for-class-9-science-chapter-9-hindi","status":"publish","type":"post","link":"https:\/\/mcqbooks.com\/ncert-solutions-for-class-9-science-chapter-9-hindi\/","title":{"rendered":"NCERT Solutions for Class 9 Science Chapter 9 Force and Laws of Motion (Hindi Medium)"},"content":{"rendered":"<h2><span style=\"color: #00ccff;\">NCERT Solutions for Class 9 Science Chapter 9 Force and Laws of Motion (Hindi Medium)<\/span><\/h2>\n<p>These Solutions are part of <a href=\"https:\/\/mcqbooks.com\/ncert-solutions-for-class-9-science-hindi-medium\/\">NCERT Solutions for Class 9 Science in Hindi Medium<\/a>. Here we have given NCERT Solutions for Class 9 Science Chapter 9 Force and Laws of Motion.<\/p>\n<p style=\"text-align: center;\"><span style=\"color: #0000ff;\"><strong>\u092a\u093e\u0920\u0917\u0924 \u0939\u0932 \u092a\u094d\u0930\u0936\u094d\u0928 (NCERT IN-TEXT QUESTIONS SOLVED)<\/strong><\/span><\/p>\n<p><strong>NCERT \u092a\u093e\u0920\u094d\u092f\u092a\u0941\u0938\u094d\u0924\u0915 ( \u092a\u0943\u0937\u094d\u0920 \u0938\u0902\u0916\u094d\u092f\u093e 131)<\/strong><\/p>\n<p><strong>\u092a\u094d\u0930\u0966 1. \u0928\u093f\u092e\u094d\u0928 \u092e\u0947\u0902 \u0915\u093f\u0938\u0915\u093e \u091c\u0921\u093c\u0924\u094d\u0935 \u0905\u0927\u093f\u0915 \u0939\u0948?<\/strong><br \/>\n<strong>(a) \u090f\u0915 \u0930\u092c\u0930 \u0915\u0940 \u0917\u0947\u0902\u0926 \u090f\u0935\u0902 \u0909\u0938\u0940 \u0906\u0915\u093e\u0930 \u0915\u093e \u092a\u0924\u094d\u0925\u0930\u0964<\/strong><br \/>\n<strong>(b) \u090f\u0915 \u0938\u093e\u0907\u0915\u093f\u0932 \u090f\u0935\u0902 \u090f\u0915 \u0930\u0947\u0932\u0917\u093e\u0921\u093c\u0940\u0964<\/strong><br \/>\n<strong>(c) \u092a\u093e\u0901\u091a \u0930\u0941\u092a\u092f\u0947 \u0915\u093e \u090f\u0915 \u0938\u093f\u0915\u094d\u0915\u093e \u090f\u0935\u0902 \u090f\u0915 \u0930\u0941\u092a\u092f\u0947 \u0915\u093e \u0938\u093f\u0915\u094d\u0915\u093e\u0964<\/strong><br \/>\n<strong>\u0909\u0924\u094d\u0924\u0930-<\/strong><br \/>\n(a) \u0909\u0938\u0940 \u0906\u0915\u093e\u0930 \u0915\u093e \u092a\u0924\u094d\u0925\u0930\u0964<br \/>\n(b) \u090f\u0915 \u0930\u0947\u0932\u0917\u093e\u0921\u093c\u0940\u0964<br \/>\n(c) \u092a\u093e\u0901\u091a \u0930\u0941\u092a\u092f\u0947 \u0915\u093e \u090f\u0915 \u0938\u093f\u0915\u094d\u0915\u093e\u0964 \u0915\u094d\u092f\u094b\u0902\u0915\u093f \u0915\u093f\u0938\u0940 \u0935\u0938\u094d\u0924\u0941 \u0915\u093e \u0926\u094d\u0930\u0935\u094d\u092f\u092e\u093e\u0928 \u0909\u0938\u0915\u0947 \u091c\u0921\u093c\u0924\u094d\u0935 \u0915\u0940 \u092e\u093e\u092a \u0939\u0948\u0964 \u091c\u093f\u0924\u0928\u093e \u0905\u0927\u093f\u0915 \u0926\u094d\u0930\u0935\u094d\u092f\u092e\u093e\u0928 \u0939\u094b\u0917\u093e, \u091c\u0921\u093c\u0924\u094d\u0935 \u092d\u0940 \u0909\u0924\u0928\u093e \u0939\u0940 \u0905\u0927\u093f\u0915 \u0939\u094b\u0917\u093e\u0964<\/p>\n<p><strong>\u092a\u094d\u0930\u0966 2. \u0928\u0940\u091a\u0947 \u0926\u093f\u090f \u0917\u090f \u0909\u0926\u093e\u0939\u0930\u0923 \u092e\u0947\u0902 \u0917\u0947\u0902\u0926 \u0915\u093e \u0935\u0947\u0917 \u0915\u093f\u0924\u0928\u0940 \u092c\u093e\u0930 \u092c\u0926\u0932\u0924\u093e \u0939\u0948, \u091c\u093e\u0928\u0928\u0947 \u0915\u093e \u092a\u094d\u0930\u092f\u093e\u0938 \u0915\u0930\u0947\u0902-<\/strong><br \/>\n<strong>\u201c\u092b\u0941\u091f\u092c\u093e\u0932 \u0915\u093e \u090f\u0915 \u0916\u093f\u0932\u093e\u0921\u093c\u0940 \u0917\u0947\u0902\u0926 \u092a\u0930 \u0915\u093f\u0915 \u0932\u0917\u093e\u0915\u0930 \u0917\u0947\u0902\u0926 \u0915\u094b \u0905\u092a\u0928\u0940 \u091f\u0940\u092e \u0915\u0947 \u0926\u0942\u0938\u0930\u0947 \u0916\u093f\u0932\u093e\u0921\u093c\u0940 \u0915\u0947 \u092a\u093e\u0938 \u092a\u0939\u0941\u0901\u091a\u093e\u0924\u093e \u0939\u0948\u0964 \u0926\u0942\u0938\u0930\u093e \u0916\u093f\u0932\u093e\u0921\u093c\u0940 \u0909\u0938 \u0917\u0947\u0902\u0926 \u0915\u094b \u0915\u093f\u0915 \u0932\u0917\u093e\u0915\u0930 \u0917\u094b\u0932 \u0915\u0940 \u0913\u0930 \u092a\u0939\u0941\u0901\u091a\u093e\u0928\u0947 \u0915\u093e \u092a\u094d\u0930\u092f\u093e\u0938 \u0915\u0930\u0924\u093e \u0939\u0948\u0964 \u0935\u093f\u092a\u0915\u094d\u0937\u0940 \u091f\u0940\u092e \u0915\u093e \u0917\u094b\u0932\u0915\u0940\u092a\u0930 \u0917\u0947\u0902\u0926 \u0915\u094b \u092a\u0915\u0921\u093c\u0924\u093e \u0939\u0948 \u0914\u0930 \u0905\u092a\u0928\u0940 \u091f\u0940\u092e \u0915\u0947 \u0916\u093f\u0932\u093e\u0921\u093c\u0940 \u0915\u0940 \u0913\u0930 \u0915\u093f\u0915 \u0932\u0917\u093e\u0924\u093e \u0939\u0948\u0964&#8221;<\/strong><br \/>\n<strong>\u0907\u0938\u0915\u0947 \u0938\u093e\u0925 \u0939\u0940 \u0909\u0938 \u0915\u093e\u0930\u0915 \u0915\u0940 \u092d\u0940 \u092a\u0939\u091a\u093e\u0928 \u0915\u0930\u0947\u0902 \u091c\u094b \u092a\u094d\u0930\u0924\u094d\u092f\u0947\u0915 \u0905\u0935\u0938\u094d\u0925\u093e \u092e\u0947\u0902 \u092c\u0932 \u092a\u094d\u0930\u0926\u093e\u0928 \u0915\u0930\u0924\u093e \u0939\u0948\u0964<\/strong><br \/>\n<strong>\u0909\u0924\u094d\u0924\u0930-<\/strong><br \/>\n<img loading=\"lazy\" src=\"https:\/\/farm2.staticflickr.com\/1816\/28964687627_5642a0c5d8_o.png\" alt=\"NCERT Solutions for Class 9 Science Chapter 9 (Hindi Medium) 1\" width=\"325\" height=\"329\" \/><br \/>\n\u0905\u0924\u0903 \u0917\u0947\u0902\u0926 \u0915\u093e \u0935\u0947\u0917 4 \u092c\u093e\u0930 \u092a\u0930\u093f\u0935\u0930\u094d\u0924\u093f\u0924 \u0939\u094b\u0924\u093e \u0939\u0948 \u0924\u0925\u093e \u0935\u0938\u094d\u0924\u0941 \u0915\u094b \u0917\u0924\u093f \u092a\u094d\u0930\u0926\u093e\u0928 \u0915\u0930\u0928\u0947 \u092f\u093e \u0917\u0924\u093f \u092e\u0947\u0902 \u092a\u0930\u093f\u0935\u0930\u094d\u0924\u0928 \u0932\u093e\u0928\u0947 \u0915\u0947 \u0932\u093f\u090f \u0916\u0940\u0902\u091a\u0928\u093e, \u0927\u0915\u0947\u0932\u0928\u093e \u092f\u093e \u0920\u094b\u0915\u0930 \u0932\u0917\u093e\u0928\u093e (Push) \u092a\u0921\u093c\u0924\u093e \u0939\u0948\u0964<\/p>\n<p><strong>\u092a\u094d\u0930\u0966 3. \u0915\u093f\u0938\u0940 \u092a\u0947\u0921\u093c \u0915\u0940 \u0936\u093e\u0916\u093e \u0915\u094b \u0924\u0940\u0935\u094d\u0930\u0924\u093e \u0938\u0947 \u0939\u093f\u0932\u093e\u0928\u0947 \u092a\u0930 \u0915\u0941\u091b \u092a\u0924\u094d\u0924\u093f\u092f\u093e\u0901 \u091d\u0921\u093c \u091c\u093e\u0924\u0940 \u0939\u0948\u0902\u0964 \u0915\u094d\u092f\u094b\u0902?<\/strong><br \/>\n<strong>\u0909\u0924\u094d\u0924\u0930-<\/strong> \u091c\u092c \u092a\u0947\u0921\u093c \u0915\u0940 \u0936\u093e\u0916\u093e \u0915\u094b \u0924\u0940\u0935\u094d\u0930\u0924\u093e \u0938\u0947 \u0939\u093f\u0932\u093e\u092f\u093e \u091c\u093e\u0924\u093e \u0939\u0948 \u0924\u094b \u0936\u093e\u0916\u093e\u090f\u0901 \u0917\u0924\u093f \u092e\u0947\u0902 \u0906 \u091c\u093e\u0924\u0940 \u0939\u0948\u0902, \u092a\u0930\u0902\u0924\u0941 \u092a\u0924\u094d\u0924\u093f\u092f\u093e\u0901 \u0935\u093f\u0930\u093e\u092e\u093e\u0935\u0938\u094d\u0925\u093e \u092e\u0947\u0902 \u0939\u0940 \u0930\u0939\u0924\u0940 \u0939\u0948\u0902\u0964 \u0935\u093f\u0930\u093e\u092e-\u091c\u0921\u093c\u0924\u094d\u0935 \u0915\u0947 \u0915\u093e\u0930\u0923 \u092a\u0924\u094d\u0924\u093f\u092f\u093e\u0901 \u0905\u092a\u0928\u0940 \u0907\u0938\u0940 \u0905\u0935\u0938\u094d\u0925\u093e \u092e\u0947\u0902 \u0930\u0939\u0928\u093e \u091a\u093e\u0939\u0924\u0940 \u0939\u0948\u0902 \u0905\u0930\u094d\u0925\u093e\u0924\u094d \u092a\u0924\u094d\u0924\u093f\u092f\u093e\u0901 \u0905\u0935\u0938\u094d\u0925\u093e \u092a\u0930\u093f\u0935\u0930\u094d\u0924\u0928 \u0915\u093e \u0935\u093f\u0930\u094b\u0927 \u0915\u0930\u0924\u0940 \u0939\u0948\u0902\u0964 \u091c\u093f\u0938\u0915\u0947 \u092b\u0932\u0938\u094d\u0935\u0930\u0942\u092a \u092a\u0924\u094d\u0924\u093f\u092f\u093e\u0901 \u091d\u0921\u093c\u0915\u0930 \u0917\u093f\u0930 \u091c\u093e\u0924\u0940 \u0939\u0948\u0902\u0964<\/p>\n<p><strong>\u092a\u094d\u0930\u0966 4. \u091c\u092c \u0915\u094b\u0908 \u0917\u0924\u093f\u0936\u0940\u0932 \u092c\u0938 \u0905\u091a\u093e\u0928\u0915 \u0930\u0941\u0915\u0924\u0940 \u0939\u0948 \u0924\u094b \u0906\u092a \u0906\u0917\u0947 \u0915\u0940 \u0913\u0930 \u091d\u0941\u0915 \u091c\u093e\u0924\u0947 \u0939\u0948\u0902 \u0914\u0930 \u091c\u092c \u0935\u093f\u0930\u093e\u092e\u093e\u0935\u0938\u094d\u0925\u093e \u0938\u0947 \u0917\u0924\u093f\u0936\u0940\u0932 \u0939\u094b\u0924\u0940 \u0939\u0948 \u0924\u094b \u092a\u0940\u091b\u0947 \u0915\u0940 \u0913\u0930 \u0939\u094b \u091c\u093e\u0924\u0947 \u0939\u0948\u0902? \u0915\u094d\u092f\u094b\u0902?<\/strong><br \/>\n<strong>\u0909\u0924\u094d\u0924\u0930-<\/strong><br \/>\n<strong>(a) \u092a\u094d\u0930\u0925\u092e \u0938\u094d\u0925\u093f\u0924\u093f \u092e\u0947\u0902 &#8211;<\/strong> \u091c\u092c \u0917\u0924\u093f\u0936\u0940\u0932 \u092c\u0938 \u0905\u091a\u093e\u0928\u0915 \u0930\u0941\u0915\u0924\u0940 \u0939\u0948, \u0907\u0938 \u0938\u094d\u0925\u093f\u0924\u093f \u092e\u0947\u0902 \u0939\u092e\u093e\u0930\u093e \u0936\u0930\u0940\u0930 \u092d\u0940 \u0917\u0924\u093f\u0936\u0940\u0932 \u0939\u094b\u0924\u093e \u0939\u0948\u0964 \u0939\u092e\u093e\u0930\u0947 \u0936\u0930\u0940\u0930 \u0915\u093e \u0928\u093f\u091a\u0932\u093e \u0939\u093f\u0938\u094d\u0938\u093e \u091c\u094b \u092c\u0938 \u0915\u0947 \u0938\u093e\u0925-\u0938\u093e\u0925 \u0917\u0924\u093f\u0936\u0940\u0932 \u0939\u0948, \u0924\u0941\u0930\u0902\u0924 \u0930\u0941\u0915 \u091c\u093e\u0924\u093e \u0939\u0948\u0964 \u092a\u0930\u0902\u0924\u0941 \u090a\u092a\u0930\u0940 \u0939\u093f\u0938\u094d\u0938\u093e \u0917\u0924\u093f \u0915\u0947 \u091c\u0921\u093c\u0924\u094d\u0935 \u0915\u0947 \u0915\u093e\u0930\u0923 \u0905\u092d\u0940 \u092d\u0940 \u0917\u0924\u093f\u0936\u0940\u0932 \u0939\u0940 \u0930\u0939\u0928\u093e \u091a\u093e\u0939\u0924\u093e \u0939\u0948\u0964 \u0905\u0924\u0903 \u092c\u0938 \u092e\u0947\u0902 \u0938\u0935\u093e\u0930 \u0935\u094d\u092f\u0915\u094d\u0924\u093f \u0906\u0917\u0947 \u0915\u0940 \u0913\u0930 \u091d\u0941\u0915 \u091c\u093e\u0924\u093e \u0939\u0948\u0964<\/p>\n<p><strong>(b) \u0926\u0942\u0938\u0930\u0940 \u0938\u094d\u0925\u093f\u0924\u093f \u092e\u0947\u0902 &#8211;<\/strong> \u091c\u092c \u0939\u092e \u0920\u0939\u0930\u0940 \u0939\u0941\u0908 \u092c\u0938 \u092e\u0947\u0902 \u092c\u0948\u0920\u0947 \u0939\u094b\u0902 \u0914\u0930 \u0905\u091a\u093e\u0928\u0915 \u092c\u0938 \u091a\u0932 \u092a\u0921\u093c\u0947 \u0924\u094b \u0939\u092e\u093e\u0930\u0947 \u0936\u0930\u0940\u0930 \u0915\u093e \u0928\u093f\u091a\u0932\u093e \u092d\u093e\u0917 \u092c\u0938 \u0915\u0940 \u0938\u0924\u0939 (Floor) \u0915\u0947 \u0938\u0902\u092a\u0930\u094d\u0915 \u092e\u0947\u0902 \u0939\u094b\u0928\u0947 \u0915\u0947 \u0915\u093e\u0930\u0923 \u0924\u0941\u0930\u0902\u0924 \u0917\u0924\u093f\u0936\u0940\u0932 \u0939\u094b \u091c\u093e\u0924\u093e \u0939\u0948, \u092a\u0930\u0902\u0924\u0941 \u0936\u0930\u0940\u0930 \u0915\u093e \u090a\u092a\u0930\u0940 \u092d\u093e\u0917 \u0935\u093f\u0930\u093e\u092e- \u091c\u0921\u093c\u0924\u094d\u0935 (Inertia of Rest) \u0915\u0947 \u0915\u093e\u0930\u0923 \u0935\u093f\u0930\u093e\u092e\u093e\u0935\u0938\u094d\u0925\u093e \u092e\u0947\u0902 \u0939\u0940 \u0930\u0939\u0928\u0947 \u0915\u0940 \u091a\u0947\u0937\u094d\u091f\u093e \u0915\u0930\u0924\u093e \u0939\u0948 \u091c\u093f\u0938\u0915\u0947 \u092a\u0930\u093f\u0923\u093e\u092e\u0938\u094d\u0935\u0930\u0942\u092a \u0939\u092e \u092a\u0940\u091b\u0947 \u0915\u0940 \u0913\u0930 \u0939\u094b \u091c\u093e\u0924\u0947 \u0939\u0948\u0902\u0964<\/p>\n<p><strong>NCERT \u092a\u093e\u0920\u094d\u092f\u092a\u0941\u0938\u094d\u0924\u0915 ( \u092a\u0943\u0937\u094d\u0920 \u0938\u0902\u0916\u094d\u092f\u093e 140 )<\/strong><\/p>\n<p><strong>\u092a\u094d\u0930\u0966 1. \u092f\u0926\u093f \u0915\u094d\u0930\u093f\u092f\u093e \u0938\u0926\u0948\u0935 \u092a\u094d\u0930\u0924\u093f\u0915\u094d\u0930\u093f\u092f\u093e \u0915\u0947 \u092c\u0930\u093e\u092c\u0930 \u0939\u0948 \u0924\u094b \u0938\u094d\u092a\u0937\u094d\u091f \u0915\u0940\u091c\u093f\u090f \u0915\u093f \u0918\u094b\u0921\u093c\u093e \u0917\u093e\u0921\u093c\u0940 \u0915\u094b \u0915\u0948\u0938\u0947 \u0916\u0940\u0902\u091a \u092a\u093e\u0924\u093e \u0939\u0948?<\/strong><br \/>\n<strong>\u0909\u0924\u094d\u0924\u0930-<\/strong> \u0928\u094d\u092f\u0942\u091f\u0928 \u0915\u0947 \u0917\u0924\u093f \u0915\u0947 \u0924\u0940\u0938\u0930\u0947 \u0928\u093f\u092f\u092e\u093e\u0928\u0941\u0938\u093e\u0930 \u0915\u094d\u0930\u093f\u092f\u093e \u0924\u0925\u093e \u092a\u094d\u0930\u0924\u093f\u0915\u094d\u0930\u093f\u092f\u093e \u092c\u0930\u093e\u092c\u0930 \u0924\u0925\u093e \u0935\u093f\u092a\u0930\u0940\u0924 \u0926\u093f\u0936\u093e \u092e\u0947\u0902 \u0932\u0917\u0924\u0947 \u0939\u0948\u0902, \u092a\u0930\u0902\u0924\u0941 \u0926\u094b \u092d\u093f\u0928\u094d\u0928 \u0935\u0938\u094d\u0924\u0941\u0913\u0902 \u092a\u0930\u0964 \u092f\u0939\u093e\u0901 \u0918\u094b\u0921\u093c\u093e \u0906\u0917\u0947 \u0915\u0940 \u0939\u0948 \u0913\u0930 \u091d\u0941\u0915\u0915\u0930 \u0915\u093f\u0938\u0940 \u0915\u094b\u0923 \u092a\u0930 \u0905\u092a\u0928\u0947 \u092a\u093e\u0901\u0935\u094b\u0902 \u0938\u0947 \u091c\u092e\u0940\u0928 \u0915\u094b \u0926\u092c\u093e\u0924\u093e \u0939\u0948 \u0924\u0925\u093e \u091c\u092e\u0940\u0928 \u0918\u094b\u0921\u093c\u0947 \u0915\u094d\u0937\u0948\u0924\u093f\u091c \u0918\u091f\u0915 \u092a\u0930 \u092a\u094d\u0930\u0924\u093f\u0915\u094d\u0930\u093f\u092f\u093e\u0924\u094d\u092e\u0915 \u092c\u0932 \u0932\u0917\u093e\u0924\u093e \u0939\u0948 \u091c\u094b \u0926\u094b\u0964 \u092d\u093e\u0917\u094b\u0902 \u092e\u0947\u0902 \u092c\u0901\u091f \u091c\u093e\u0924\u093e \u0939\u0948\u0964 \u092c\u0932 \u0915\u093e \u090a\u0930\u094d\u0927\u094d\u0935\u093e\u0927\u0930 \u0918\u091f\u0915 \u0918\u094b\u0921\u093c\u0947 \u0915\u094b \u0938\u0902\u0924\u0941\u0932\u0928 \u0926\u0947\u0924\u093e \u0939\u0948 \u091c\u092c\u0915\u093f \u0915\u094d\u0937\u0948\u0924\u093f\u091c \u0918\u091f\u0915 \u0917\u093e\u0921\u093c\u0940 \u0915\u094b \u0906\u0917\u0947 \u0915\u0940 \u0913\u0930 \u0917\u0924\u093f \u0926\u0947\u0924\u093e \u0939\u0948\u0964 \u092f\u0926\u093f \u0918\u0930\u094d\u0937\u0923 \u092c\u0932 (\u092a\u0939\u093f\u090f \u0914\u0930 \u0938\u0921\u093c\u0915 \u0915\u0947 \u092c\u0940\u091a) \u0915\u093e \u092e\u093e\u0928 \u0915\u094d\u0937\u0948\u0924\u093f\u091c \u0918\u091f\u0915 \u0938\u0947 \u0915\u092e \u0939\u094b\u0924\u093e \u0939\u0948 \u0924\u094b \u0917\u093e\u0921\u093c\u0940 \u0906\u0917\u0947 \u092c\u0922\u093c \u091c\u093e\u0924\u0940 \u0939\u0948\u0964<br \/>\n<img loading=\"lazy\" src=\"https:\/\/farm1.staticflickr.com\/931\/43853187392_a4cb698f1a_o.png\" alt=\"NCERT Solutions for Class 9 Science Chapter 9 (Hindi Medium) 2\" width=\"201\" height=\"194\" \/><\/p>\n<p><strong>\u092a\u094d\u0930\u0966 2. \u090f\u0915 \u0905\u0917\u094d\u0928\u093f\u0936\u092e\u0928 \u0915\u0930\u094d\u092e\u091a\u093e\u0930\u0940 \u0915\u094b \u0924\u0940\u0935\u094d\u0930 \u0917\u0924\u093f \u0938\u0947 \u092c\u0939\u0941\u0924\u093e\u092f\u0924 \u092e\u093e\u0924\u094d\u0930\u093e \u092e\u0947\u0902 \u092a\u093e\u0928\u0940 \u092b\u0947\u0902\u0915\u0928\u0947 \u0935\u093e\u0932\u0940 \u0930\u092c\u0921\u093c \u0915\u0940 \u0928\u0932\u0940 \u0915\u094b \u092a\u0915\u0921\u093c\u0928\u0947 \u092e\u0947\u0902 \u0915\u0920\u093f\u0928\u093e\u0908 \u0915\u094d\u092f\u094b\u0902 \u0939\u094b\u0924\u0940 \u0939\u0948? \u0938\u094d\u092a\u0937\u094d\u091f \u0915\u0930\u0947\u0902\u0964<\/strong><br \/>\n<strong>\u0909\u0924\u094d\u0924\u0930-<\/strong> \u0915\u094d\u0930\u093f\u092f\u093e \u0924\u0925\u093e \u092a\u094d\u0930\u0924\u093f\u0915\u094d\u0930\u093f\u092f\u093e \u0938\u0926\u0948\u0935 \u0938\u092e\u093e\u0928 \u0914\u0930 \u0935\u093f\u092a\u0930\u0940\u0924 \u0926\u093f\u0936\u093e \u092e\u0947\u0902 \u0939\u094b\u0924\u0940 \u0939\u0948\u0964 \u092a\u093e\u0928\u0940 \u0915\u0940 \u0927\u093e\u0930\u093e \u0924\u0940\u0935\u094d\u0930 \u0935\u0947\u0917 \u0938\u0947 \u0906\u0917\u0947 \u0928\u093f\u0915\u0932\u0924\u0940 \u0939\u0948 \u0924\u0925\u093e \u092a\u0940\u091b\u0947 \u0915\u0940 \u0913\u0930 \u092a\u094d\u0930\u0924\u093f\u0915\u094d\u0930\u093f\u092f\u093e \u092c\u0932 \u092a\u093e\u0907\u092a (\u0928\u0932\u0940) \u092a\u0930 \u0932\u0917\u093e\u0924\u093e \u0939\u0948 \u091c\u093f\u0938\u0915\u0947 \u0915\u093e\u0930\u0923 \u0928\u0932\u0940 \u092a\u0940\u091b\u0947 \u0916\u093f\u0938\u0915\u0928\u0947 \u0932\u0917\u0924\u0940 \u0939\u0948 \u0914\u0930 \u092b\u093f\u0938\u0932\u0924\u0940 \u0939\u0948\u0964 \u092f\u0939\u0940 \u0915\u093e\u0930\u0923 \u0939\u0948 \u0915\u093f \u0905\u0917\u094d\u0928\u093f\u0936\u092e\u0928 \u0915\u0930\u094d\u092e\u091a\u093e\u0930\u0940 \u0915\u094b \u0928\u0932\u0940 \u092a\u0915\u0921\u093c\u0928\u0947 \u092e\u0947\u0902 \u0915\u0920\u093f\u0928\u093e\u0908 \u0939\u094b\u0924\u0940 \u0939\u0948\u0964<\/p>\n<p><strong>\u092a\u094d\u0930\u0966 3. \u090f\u0915 50 g \u0926\u094d\u0930\u0935\u094d\u092f\u092e\u093e\u0928 \u0915\u0940 \u0917\u094b\u0932\u0940 4 kg \u0926\u094d\u0930\u0935\u094d\u092f\u092e\u093e\u0928 \u0915\u0940 \u0930\u093e\u092f\u092b\u0932 \u0938\u0947 35 ms-1 \u0915\u0947 \u092a\u094d\u0930\u093e\u0930\u0902\u092d\u093f\u0915 \u0935\u0947\u0917 \u0938\u0947 \u091b\u094b\u0921\u093c\u0940 \u091c\u093e\u0924\u0940 \u0939\u0948\u0964 \u0930\u093e\u092f\u092b\u0932 \u0915\u0947 \u092a\u094d\u0930\u093e\u0930\u0902\u092d\u093f\u0915 \u092a\u094d\u0930\u0924\u093f\u0915\u094d\u0937\u0947\u092a\u093f\u0924 \u0935\u0947\u0917 \u0915\u0940 \u0917\u0923\u0928\u093e \u0915\u0940\u091c\u093f\u090f\u0964<\/strong><br \/>\n<strong>\u0909\u0924\u094d\u0924\u0930-<\/strong> \u0930\u093e\u0907\u092b\u0932 \u0915\u093e \u0926\u094d\u0930\u0935\u094d\u092f\u092e\u093e\u0928 (M) = 4 kg<br \/>\n50 \u0917\u094b\u0932\u0940 \u0915\u093e \u0926\u094d\u0930\u0935\u094d\u092f\u092e\u093e\u0928 (m) = 50 g = \\(\\frac { 50 }{ 1000 }\\) kg<br \/>\n\u0917\u094b\u0932\u0940 \u0915\u093e \u0935\u0947\u0917 (v) = 35 ms<sup>-1<\/sup><br \/>\n\u0930\u093e\u0907\u092b\u0932 \u0915\u093e \u092a\u094d\u0930\u0924\u093f\u0915\u094d\u0937\u0947\u092a\u093f\u0924 (Recoil) \u0935\u0947\u0917 (V) = ?<br \/>\n\u0938\u0902\u0935\u0947\u0917 \u0938\u0902\u0930\u0915\u094d\u0937\u0923 \u0915\u0947 \u0928\u093f\u092f\u092e \u0926\u094d\u0935\u093e\u0930\u093e<br \/>\n\u0930\u093e\u0907\u092b\u0932 \u0915\u093e \u0938\u0902\u0935\u0947\u0917 = \u0917\u094b\u0932\u0940 \u0915\u093e \u0938\u0902\u0935\u0947\u0917 = MV = mv<br \/>\n\u21d2 (4 kg) (V) = [\\(\\frac { 50 }{ 1000 }\\) kg] (35 m\/s)<br \/>\n\u21d2 V = \\(\\frac { 50 x 35 }{ 1000 x 4 }\\) m\/s = 0.4375 ms<sup>-1<\/sup><br \/>\n\u0905\u0924\u0903 \u0930\u093e\u0907\u092b\u0932 \u0915\u093e \u092a\u094d\u0930\u0924\u093f\u0915\u094d\u0937\u0947\u092a\u093f\u0924 \u0935\u0947\u0917 = 0.4375 ms<sup>-1<\/sup><\/p>\n<p><strong>\u092a\u094d\u0930\u0966 4. 100 g \u0914\u0930 200 g \u0926\u094d\u0930\u0935\u094d\u092f\u092e\u093e\u0928 \u0915\u0940 \u0926\u094b \u0935\u0938\u094d\u0924\u0941\u090f\u0901 \u090f\u0915 \u0939\u0940 \u0930\u0947\u0916\u093e \u0915\u0947 \u0905\u0928\u0941\u0926\u093f\u0936 \u090f\u0915 \u0939\u0940 \u0926\u093f\u0936\u093e \u092e\u0947\u0902 \u0915\u094d\u0930\u092e\u0936\u0903 2 ms<sup>-1<\/sup> \u0914\u0930 1 ms<sup>-1<\/sup> \u0915\u0947 \u0935\u0947\u0917 \u0938\u0947 \u0917\u0924\u093f \u0915\u0930 \u0930\u0939\u0940 \u0939\u0948\u0902\u0964 \u0926\u094b\u0928\u094b\u0902 \u0935\u0938\u094d\u0924\u0941\u090f\u0901 \u091f\u0915\u0930\u093e \u091c\u093e\u0924\u0940 \u0939\u0948\u0902\u0964 \u091f\u0915\u094d\u0915\u0930 \u0915\u0947 \u092a\u0936\u094d\u091a\u093e\u0924\u094d \u092a\u094d\u0930\u0925\u092e \u0935\u0938\u094d\u0924\u0941 \u0915\u093e \u0935\u0947\u0917 1.67ms<sup>-1<\/sup> \u0939\u094b \u091c\u093e\u0924\u093e \u0939\u0948, \u0924\u094b \u0926\u0942\u0938\u0930\u0940 \u0935\u0938\u094d\u0924\u0941 \u0915\u093e \u0935\u0947\u0917 \u091c\u094d\u091e\u093e\u0924 \u0915\u0930\u0947\u0902\u0964<\/strong><br \/>\n<img loading=\"lazy\" src=\"https:\/\/farm1.staticflickr.com\/852\/28964688177_cdc1275176_o.png\" alt=\"NCERT Solutions for Class 9 Science Chapter 9 (Hindi Medium) 3\" width=\"364\" height=\"353\" \/><\/p>\n<p style=\"text-align: center;\"><span style=\"color: #0000ff;\"><strong>\u092a\u093e\u0920\u094d\u092f\u092a\u0941\u0938\u094d\u0924\u0915 \u0938\u0947 \u0939\u0932 \u092a\u094d\u0930\u0936\u094d\u0928 (NCERT TEXTBOOK QUESTIONS SOLVED)<\/strong><\/span><\/p>\n<p><strong>\u092a\u094d\u0930\u0966 1. \u0915\u094b\u0908 \u0935\u0938\u094d\u0924\u0941 \u0936\u0942\u0928\u094d\u092f \u092c\u093e\u0939\u094d\u092f \u0905\u0938\u0902\u0924\u0941\u0932\u093f\u0924 \u092c\u0932 \u0905\u0928\u0941\u092d\u0935 \u0915\u0930\u0924\u0940 \u0939\u0948\u0964 \u0915\u094d\u092f\u093e \u0915\u093f\u0938\u0940 \u092d\u0940 \u0935\u0938\u094d\u0924\u0941 \u0915\u0947 \u0932\u093f\u090f \u0905\u0936\u0942\u0928\u094d\u092f \u0935\u0947\u0917 (non-zero velocity) \u0938\u0947 \u0917\u0924\u093f \u0915\u0930\u0928\u093e \u0938\u0902\u092d\u0935 \u0939\u0948? \u092f\u0926\u093f \u0939\u093e\u0901, \u0924\u094b \u0935\u0938\u094d\u0924\u0941 \u0915\u0947 \u0935\u0947\u0917 \u0915\u0947 \u092a\u0930\u093f\u092e\u093e\u0923 \u090f\u0935\u0902 \u0926\u093f\u0936\u093e \u092a\u0930 \u0932\u0917\u0928\u0947 \u0935\u093e\u0932\u0940 \u0936\u0930\u094d\u0924\u0947 \u0915\u093e \u0909\u0932\u094d\u0932\u0947\u0916 \u0915\u0930\u0947\u0902\u0964 \u092f\u0926\u093f \u0928\u0939\u0940\u0902, \u0924\u094b \u0915\u093e\u0930\u0923 \u0938\u094d\u092a\u0937\u094d\u091f \u0915\u0930\u0947\u0902\u0964<\/strong><br \/>\n<strong>\u0909\u0924\u094d\u0924\u0930-<\/strong> \u0939\u093e\u0901, \u0915\u093f\u0938\u0940 \u0935\u0938\u094d\u0924\u0941 \u0915\u0947 \u0932\u093f\u090f \u0905\u0936\u0942\u0928\u094d\u092f \u0935\u0947\u0917 \u0938\u0947 \u0917\u0924\u093f \u0915\u0930\u0928\u093e \u0938\u0902\u092d\u0935 \u0939\u0948\u0964 \u0910\u0938\u093e \u0928\u093f\u092e\u094d\u0928\u0932\u093f\u0916\u093f\u0924 \u0938\u094d\u0925\u093f\u0924\u093f\u092f\u094b\u0902 (\u0936\u0930\u094d\u0924\u0947) \u092e\u0947\u0902 \u0938\u0902\u092d\u0935 \u0939\u094b \u0938\u0915\u0924\u093e \u0939\u0948<br \/>\n(a) \u091c\u092c \u0935\u0938\u094d\u0924\u0941 \u090f\u0915 \u0938\u0940\u0927\u0940 \u0938\u0930\u0932 \u0930\u0947\u0916\u093e \u092e\u0947\u0902 \u090f\u0915\u0938\u092e\u093e\u0928 \u091a\u093e\u0932 \u0938\u0947 \u091a\u0932 \u0930\u0939\u0940 \u0939\u094b\u0964<br \/>\n(b) \u091c\u092c \u091a\u093e\u0932 \u0915\u0947 \u092a\u0930\u093f\u092e\u093e\u0923 (Magnitude of Speed) \u092e\u0947\u0902 \u0915\u094b\u0908 \u092a\u0930\u093f\u0935\u0930\u094d\u0924\u0928 \u0928\u0939\u0940\u0902 \u0939\u094b \u0930\u0939\u093e \u0939\u094b\u0964<br \/>\n(c) \u091c\u092c \u0917\u0924\u093f \u0915\u0940 \u0926\u093f\u0936\u093e \u092e\u0947\u0902 \u0915\u094b\u0908 \u092a\u0930\u093f\u0935\u0930\u094d\u0924\u0928 \u0928\u0939\u0940\u0902 \u0939\u094b\u0964<br \/>\n(d) \u0935\u093e\u092f\u0941 \u0915\u093e \u092a\u094d\u0930\u0924\u093f\u0930\u094b\u0927 (Air Resistance) \u0905\u0935\u0936\u094d\u092f \u0939\u0940 \u0936\u0942\u0928\u094d\u092f \u0939\u094b\u0928\u093e \u091a\u093e\u0939\u093f\u090f\u0964<br \/>\n(e) \u091c\u092c \u0935\u0938\u094d\u0924\u0941 \u0915\u0940 \u0938\u0924\u0939 \u0924\u0925\u093e \u091c\u092e\u0940\u0928 \u0915\u0947 \u092c\u0940\u091a \u0918\u0930\u094d\u0937\u0923 \u092c\u0932 \u0915\u093e \u092e\u093e\u0928 \u0936\u0942\u0928\u094d\u092f \u0939\u094b\u0964<\/p>\n<p><strong>\u092a\u094d\u0930\u0966 2. \u091c\u092c \u0915\u093f\u0938\u0940 \u091b\u0921\u093c\u0940 \u0938\u0947 \u090f\u0915 \u0926\u0930\u0940 (\u0915\u093e\u0930\u094d\u092a\u0947\u091f) \u0915\u094b \u092a\u0940\u091f\u093e \u091c\u093e\u0924\u093e \u0939\u0948, \u0924\u094b \u0927\u0942\u0932 \u0915\u0947 \u0915\u0923 \u092c\u093e\u0939\u0930 \u0906 \u091c\u093e\u0924\u0947 \u0939\u0948\u0902\u0964 \u0938\u094d\u092a\u0937\u094d\u091f \u0915\u0930\u0947\u0902\u0964<\/strong><br \/>\n<strong>\u0909\u0924\u094d\u0924\u0930-<\/strong> \u092a\u094d\u0930\u093e\u0930\u0902\u092d \u092e\u0947\u0902 \u0926\u0930\u0940 \u0924\u0925\u093e \u0927\u0942\u0932 \u0915\u0947 \u0915\u0923 \u0935\u093f\u0930\u093e\u092e\u093e\u0935\u0938\u094d\u0925\u093e \u092e\u0947\u0902 \u0939\u094b\u0924\u0947 \u0939\u0948\u0902\u0964 \u091c\u092c \u0907\u0928\u094d\u0939\u0947\u0902 \u0915\u093f\u0938\u0940 \u091b\u0921\u093c\u0940 \u0938\u0947 \u092a\u0940\u091f\u093e \u091c\u093e\u0924\u093e \u0939\u0948 \u0924\u094b \u0926\u0930\u0940 \u092e\u0947\u0902 \u0915\u0902\u092a\u0928 \u0917\u0924\u093f \u0939\u094b\u0928\u0947 \u0932\u0917\u0924\u0940 \u0939\u0948, \u092a\u0930\u0902\u0924\u0941 \u0927\u0942\u0932\u0915\u0923 \u0935\u093f\u0930\u093e\u092e \u092e\u0947\u0902 \u0939\u0940 \u0930\u0939\u0928\u093e \u091a\u093e\u0939\u0924\u0947 \u0939\u0948\u0902\u0964 \u0905\u0924\u0903 \u0935\u093f\u0930\u093e\u092e-\u091c\u0921\u093c\u0924\u094d\u0935 \u0915\u0947 \u0915\u093e\u0930\u0923 \u0927\u0942\u0932\u0915\u0923 \u0905\u092a\u0928\u0940 \u0905\u0935\u0938\u094d\u0925\u093e \u0915\u094b \u092c\u0928\u093e\u090f \u0930\u0916\u0928\u093e \u091a\u093e\u0939\u0924\u0947 \u0939\u0948\u0902 \u091c\u092c\u0915\u093f \u0926\u0930\u0940 (\u0915\u093e\u0930\u094d\u092a\u0947\u091f) \u092e\u0947\u0902 \u0917\u0924\u093f \u0939\u094b\u0924\u0940 \u0939\u0948 \u091c\u093f\u0938\u0915\u0947 \u092a\u0930\u093f\u0923\u093e\u092e\u0938\u094d\u0935\u0930\u0942\u092a \u0927\u0942\u0932\u0915\u0923 \u092c\u093e\u0939\u0930 \u0928\u093f\u0915\u0932 \u091c\u093e\u0924\u0947 \u0939\u0948\u0902\u0964<\/p>\n<p><strong>\u092a\u094d\u0930\u0966 3. \u092c\u0938 \u0915\u0940 \u091b\u0924 \u092a\u0930 \u0930\u0916\u0947 \u0938\u093e\u092e\u093e\u0928 \u0915\u094b \u0930\u0938\u094d\u0938\u0940 \u0938\u0947 \u0915\u094d\u092f\u094b\u0902 \u092c\u093e\u0901\u0927\u093e \u091c\u093e\u0924\u093e \u0939\u0948?<\/strong><br \/>\n<strong>\u0909\u0924\u094d\u0924\u0930-<\/strong> \u092c\u0938 \u0915\u0940 \u091b\u0924 \u092a\u0930 \u0930\u0916\u0947 \u0938\u093e\u092e\u093e\u0928 \u0915\u094b \u0930\u0938\u094d\u0938\u0940 \u0938\u0947 \u0907\u0938\u0932\u093f\u090f \u092c\u093e\u0901\u0927\u093e \u091c\u093e\u0924\u093e \u0939\u0948 \u0924\u093e\u0915\u093f \u0905\u091a\u093e\u0928\u0915 \u092c\u094d\u0930\u0947\u0915 \u0932\u0917\u0928\u0947 \u092a\u0930 \u0924\u0925\u093e \u092c\u0938 \u0915\u0947 \u0905\u091a\u093e\u0928\u0915 \u0916\u0941\u0932\u0928\u0947 \u0915\u0940 \u0938\u094d\u0925\u093f\u0924\u093f \u092e\u0947\u0902 \u0938\u093e\u092e\u093e\u0928 \u092a\u0940\u091b\u0947 \u0915\u0940 \u0913\u0930 \u0928\u0940\u091a\u0947 \u0924\u0925\u093e \u0906\u0917\u0947 \u0915\u0940 \u0913\u0930 \u0928\u0940\u091a\u0947 \u0928 \u0917\u093f\u0930 \u091c\u093e\u090f\u0964 \u092c\u0938 \u0915\u0947 \u092e\u0941\u0921\u093c\u0928\u0947 \u0915\u0940 \u0938\u094d\u0925\u093f\u0924\u093f \u092e\u0947\u0902 \u092d\u0940 \u0938\u093e\u092e\u093e\u0928 \u0915\u093f\u0928\u093e\u0930\u0947 \u0938\u0947 \u0917\u093f\u0930 \u0938\u0915\u0924\u093e \u0939\u0948\u0964 \u0910\u0938\u093e \u0907\u0938\u0932\u093f\u090f \u0939\u094b\u0924\u093e \u0939\u0948 \u0915\u094d\u092f\u094b\u0902\u0915\u093f \u092c\u0938 \u0915\u0940 \u0917\u0924\u093f \u092e\u0947\u0902 \u092a\u0930\u093f\u0935\u0930\u094d\u0924\u0928 \u0939\u094b\u0928\u0947 \u0915\u0940 \u0938\u094d\u0925\u093f\u0924\u093f \u092e\u0947\u0902 \u0938\u093e\u092e\u093e\u0928 \u091c\u0921\u093c\u0924\u094d\u0935 \u0915\u0947 \u0915\u093e\u0930\u0923 \u0905\u0935\u0938\u094d\u0925\u093e \u092a\u0930\u093f\u0935\u0930\u094d\u0924\u0928 \u0915\u093e \u0935\u093f\u0930\u094b\u0927 \u0915\u0930\u0924\u093e \u0939\u0948; \u091c\u0948\u0938\u0947-\u092c\u094d\u0930\u0947\u0915 \u0932\u0917\u0928\u0947 \u092a\u0930 \u092c\u0938 \u0930\u0941\u0915\u0924\u0940 \u0939\u0948 \u092a\u0930\u0902\u0924\u0941 \u0938\u093e\u092e\u093e\u0928 \u0917\u0924\u093f \u092e\u0947\u0902 \u0939\u0940 \u0930\u0939\u0928\u093e \u091a\u093e\u0939\u0924\u093e \u0939\u0948 \u091c\u093f\u0938\u0938\u0947 \u0906\u0917\u0947 \u0916\u093f\u0938\u0915\u0915\u0930 \u0917\u093f\u0930 \u0938\u0915\u0924\u093e \u0939\u0948\u0964 \u0907\u0938\u0940 \u092a\u094d\u0930\u0915\u093e\u0930 \u092c\u0938 \u0915\u0947 \u0905\u091a\u093e\u0928\u0915 \u0916\u0941\u0932\u0928\u0947 \u092a\u0930 \u092c\u0938 \u0917\u0924\u093f \u092e\u0947\u0902 \u0906 \u091c\u093e\u0924\u0940 \u0939\u0948, \u092a\u0930\u0902\u0924\u0941 \u0938\u093e\u092e\u093e\u0928 \u0935\u093f\u0930\u093e\u092e-\u091c\u0921\u093c\u0924\u094d\u0935 \u092e\u0947\u0902 \u0939\u0940 \u0930\u0939\u0928\u093e \u091a\u093e\u0939\u0924\u093e \u0939\u0948 \u0914\u0930 \u092a\u0940\u091b\u0947 \u0916\u093f\u0938\u0915\u0915\u0930 \u0917\u093f\u0930 \u0938\u0915\u0924\u093e \u0939\u0948\u0964<\/p>\n<p><strong>\u092a\u094d\u0930\u0966 4. \u0915\u093f\u0938\u0940 \u092c\u0932\u094d\u0932\u0947\u092c\u093e\u091c \u0926\u094d\u0935\u093e\u0930\u093e \u0915\u094d\u0930\u093f\u0915\u0947\u091f \u0915\u0940 \u0917\u0947\u0902\u0926 \u0915\u094b \u092e\u093e\u0930\u0928\u0947 \u092a\u0930 \u0917\u0947\u0902\u0926 \u091c\u092e\u0940\u0928 \u092a\u0930 \u0932\u0941\u0922\u093c\u0915\u0924\u0940 \u0939\u0948\u0964 \u0915\u0941\u091b \u0926\u0942\u0930\u0940 \u091a\u0932\u0928\u0947 \u0915\u0947 \u092a\u0936\u094d\u091a\u093e\u0924\u094d \u0917\u0947\u0902\u0926 \u0930\u0941\u0915 \u091c\u093e\u0924\u0940 \u0939\u0948\u0964 \u0917\u0947\u0902\u0926 \u0930\u0941\u0915\u0928\u0947 \u0915\u0947 \u0932\u093f\u090f \u0927\u0940\u092e\u0940 \u0939\u094b\u0924\u0940 \u0939\u0948, \u0915\u094d\u092f\u094b\u0902\u0915\u093f<\/strong><br \/>\n<strong>(a) \u092c\u0932\u094d\u0932\u0947\u092c\u093e\u091c \u0928\u0947 \u0917\u0947\u0902\u0926 \u0915\u094b \u092a\u0930\u094d\u092f\u093e\u092a\u094d\u0924 \u092a\u094d\u0930\u092f\u093e\u0938 \u0938\u0947 \u0939\u093f\u091f \u0928\u0939\u0940\u0902 \u0915\u093f\u092f\u093e \u0939\u0948\u0964<\/strong><br \/>\n<strong>(b) \u0935\u0947\u0917 \u0917\u0947\u0902\u0926 \u092a\u0930 \u0932\u0917\u093e\u090f \u0917\u090f \u092c\u0932 \u0915\u0947 \u0938\u092e\u093e\u0928\u0941\u092a\u093e\u0924\u0940 \u0939\u0948\u0964<\/strong><br \/>\n<strong>(c) \u0917\u0947\u0902\u0926 \u092a\u0930 \u0917\u0924\u093f \u0915\u0940 \u0926\u093f\u0936\u093e \u0915\u0947 \u0935\u093f\u092a\u0930\u0940\u0924 \u090f\u0915 \u092c\u0932 \u0915\u093e\u0930\u094d\u092f \u0915\u0930 \u0930\u0939\u093e \u0939\u0948\u0964<\/strong><br \/>\n<strong>(d) \u0917\u0947\u0902\u0926 \u092a\u0930 \u0915\u094b\u0908 \u0905\u0938\u0902\u0924\u0941\u0932\u093f\u0924 \u092c\u0932 \u0915\u093e\u0930\u094d\u092f\u0930\u0924 \u0928\u0939\u0940\u0902 \u0939\u0948,<\/strong><br \/>\n<strong>\u0905\u0924\u0903 \u0917\u0947\u0902\u0926 \u0935\u093f\u0930\u093e\u092e\u093e\u0935\u0938\u094d\u0925\u093e \u092e\u0947\u0902 \u0906\u0928\u0947 \u0915\u0947 \u0932\u093f\u090f \u092a\u094d\u0930\u092f\u093e\u0938\u0930\u0924 \u0939\u0948\u0964<\/strong><br \/>\n<strong>(\u0938\u0939\u0940 \u0935\u093f\u0915\u0932\u094d\u092a \u0915\u093e \u091a\u092f\u0928 \u0915\u0930\u0947\u0902\u0964)<\/strong><br \/>\n<strong>\u0909\u0924\u094d\u0924\u0930-<\/strong> (c) \u0917\u0947\u0902\u0926 \u092a\u0930 \u0917\u0924\u093f \u0915\u0940 \u0926\u093f\u0936\u093e \u0915\u0947 \u0935\u093f\u092a\u0930\u0940\u0924 \u090f\u0915 \u092c\u0932 \u0915\u093e\u0930\u094d\u092f \u0915\u0930 \u0930\u0939\u093e \u0939\u0948\u0964<\/p>\n<p><strong>\u092a\u094d\u0930\u0966 5. \u090f\u0915 \u091f\u094d\u0930\u0915 \u0935\u093f\u0930\u093e\u092e\u093e\u0935\u0938\u094d\u0925\u093e \u0938\u0947 \u0915\u093f\u0938\u0940 \u092a\u0939\u093e\u0921\u093c\u0940 \u0938\u0947 \u0928\u0940\u091a\u0947 \u0915\u0940 \u0913\u0930 \u0928\u093f\u092f\u0924 \u0924\u094d\u0935\u0930\u0923 \u0938\u0947 \u0932\u0941\u0922\u093c\u0915\u0928\u093e \u0936\u0941\u0930\u0942 \u0915\u0930\u0924\u093e \u0939\u0948\u0964 \u092f\u0939 20 s \u092e\u0947\u0902 400 m \u0915\u0940 \u0926\u0942\u0930\u0940 \u0924\u092f \u0915\u0930\u0924\u093e \u0939\u0948\u0964 \u0907\u0938\u0915\u093e \u0924\u094d\u0935\u0930\u0923 \u091c\u094d\u091e\u093e\u0924 \u0915\u0930\u0947\u0902\u0964 \u0905\u0917\u0930 \u0907\u0938\u0915\u093e \u0926\u094d\u0930\u0935\u094d\u092f\u092e\u093e\u0928 7 \u091f\u0928 \u0939\u0948 \u0924\u094b \u0907\u0938 \u092a\u0930 \u0932\u0917\u0928\u0947 \u0935\u093e\u0932\u0947 \u092c\u0932 \u0915\u0940 \u0917\u0923\u0928\u093e \u0915\u0930\u0947\u0902\u0964 (1 \u091f\u0928 = 1000 kg)<\/strong><br \/>\n<img loading=\"lazy\" src=\"https:\/\/farm1.staticflickr.com\/849\/28964688267_df6e95c4f9_o.png\" alt=\"NCERT Solutions for Class 9 Science Chapter 9 (Hindi Medium) 4\" width=\"359\" height=\"506\" \/><\/p>\n<p><strong>\u092a\u094d\u0930\u0966 6. 1 kg \u0926\u094d\u0930\u0935\u094d\u092f\u092e\u093e\u0928 \u0915\u0947 \u090f\u0915 \u092a\u0924\u094d\u0925\u0930 \u0915\u094b 20 ms<sup>-1<\/sup> \u0915\u0947 \u0935\u0947\u0917 \u0938\u0947 \u091d\u0940\u0932 \u0915\u0940 \u091c\u092e\u0940 \u0939\u0941\u0908 \u0938\u0924\u0939 \u092a\u0930 \u092b\u0947\u0902\u0915\u093e \u091c\u093e\u0924\u093e \u0939\u0948\u0964 \u092a\u0924\u094d\u0925\u0930 50 m \u0915\u0940 \u0926\u0942\u0930\u0940 \u0924\u092f \u0915\u0930\u0928\u0947 \u0915\u0947 \u092c\u093e\u0926 \u0930\u0941\u0915 \u091c\u093e\u0924\u093e \u0939\u0948\u0964 \u092a\u0924\u094d\u0925\u0930 \u0914\u0930 \u092c\u0930\u094d\u092b \u0915\u0947 \u092c\u0940\u091a \u0932\u0917\u0928\u0947 \u0935\u093e\u0932\u0947 \u0918\u0930\u094d\u0937\u0923 \u092c\u0932 \u0915\u0940 \u0917\u0923\u0928\u093e \u0915\u0930\u0947\u0902\u0964<\/strong><br \/>\n<img loading=\"lazy\" src=\"https:\/\/farm1.staticflickr.com\/932\/28964688397_50d82b81f1_o.png\" alt=\"NCERT Solutions for Class 9 Science Chapter 9 (Hindi Medium) 5\" width=\"361\" height=\"273\" \/><\/p>\n<p><strong>\u092a\u094d\u0930\u0966 7. \u090f\u0915 8000 kg \u0926\u094d\u0930\u0935\u094d\u092f\u092e\u093e\u0928 \u0915\u093e \u0930\u0947\u0932 \u0907\u0902\u091c\u0928 \u092a\u094d\u0930\u0924\u093f 2000 kg \u0926\u094d\u0930\u0935\u094d\u092f\u092e\u093e\u0928 \u0935\u093e\u0932\u0947 \u092a\u093e\u0901\u091a \u0921\u093f\u092c\u094d\u092c\u094b\u0902 \u0915\u094b \u0938\u0940\u0927\u0940 \u092a\u091f\u0930\u0940 \u092a\u0930 \u0916\u0940\u0902\u091a\u0924\u093e \u0939\u0948\u0964 \u092f\u0926\u093f \u0907\u0902\u091c\u0928 40000 N \u0915\u093e \u092c\u0932 \u0906\u0930\u094b\u092a\u093f\u0924 \u0915\u0930\u0924\u093e \u0939\u0948\u0964 \u0924\u0925\u093e \u092f\u0926\u093f \u092a\u091f\u0930\u0940 5000 N \u0915\u093e \u0918\u0930\u094d\u0937\u0923 \u092c\u0932 \u0932\u0917\u093e\u0924\u0940 \u0939\u0948, \u0924\u094b \u091c\u094d\u091e\u093e\u0924 \u0915\u0930\u0947\u0902<\/strong><br \/>\n<strong>(a) \u0928\u0947\u091f \u0924\u094d\u0935\u0930\u0923 \u092c\u0932<\/strong><br \/>\n<strong>(b) \u0930\u0947\u0932 \u0915\u093e \u0924\u094d\u0935\u0930\u0923 \u0924\u0925\u093e<\/strong><br \/>\n<strong>(c) \u0921\u093f\u092c\u094d\u092c\u0947 1 \u0926\u094d\u0935\u093e\u0930\u093e \u0921\u093f\u092c\u094d\u092c\u0947 2 \u092a\u0930 \u0932\u0917\u093e\u092f\u093e \u0917\u092f\u093e \u092c\u0932\u0964<\/strong><br \/>\n<img loading=\"lazy\" src=\"https:\/\/farm1.staticflickr.com\/852\/42996843565_e57590856f_o.png\" alt=\"NCERT Solutions for Class 9 Science Chapter 9 (Hindi Medium) 6\" width=\"361\" height=\"540\" \/><\/p>\n<p><strong>\u092a\u094d\u0930\u0966 8. \u090f\u0915 \u0917\u093e\u0921\u093c\u0940 \u0915\u093e \u0926\u094d\u0930\u0935\u094d\u092f\u092e\u093e\u0928 1500 kg \u0939\u0948\u0964 \u092f\u0926\u093f \u0917\u093e\u0921\u093c\u0940 \u0915\u094b 1.7 ms<sup>-2<\/sup>\u00a0\u0915\u0947 \u090b\u0923\u093e\u0924\u094d\u092e\u0915 \u0924\u094d\u0935\u0930\u0923 (\u0905\u0935\u092e\u0902\u0926\u0928) \u0915\u0947 \u0938\u093e\u0925 \u0935\u093f\u0930\u093e\u092e\u093e\u0935\u0938\u094d\u0925\u093e \u092e\u0947\u0902 \u0932\u093e\u0928\u093e \u0939\u0948, \u0924\u094b \u0917\u093e\u0921\u093c\u0940 \u0924\u0925\u093e \u0938\u0921\u093c\u0915 \u0915\u0947 \u092c\u0940\u091a \u0932\u0917\u0928\u0947 \u0935\u093e\u0932\u093e \u092c\u0932 \u0915\u093f\u0924\u0928\u093e \u0939\u094b\u0917\u093e?<\/strong><br \/>\n<img loading=\"lazy\" src=\"https:\/\/farm2.staticflickr.com\/1800\/28964688807_278ff21c21_o.png\" alt=\"NCERT Solutions for Class 9 Science Chapter 9 (Hindi Medium) 7\" width=\"364\" height=\"173\" \/><\/p>\n<p><strong>\u092a\u094d\u0930\u0966 9. \u0915\u093f\u0938\u0940 m \u0926\u094d\u0930\u0935\u094d\u092f\u092e\u093e\u0928 \u0915\u0940 \u0935\u0938\u094d\u0924\u0941 \u091c\u093f\u0938\u0915\u093e \u0935\u0947\u0917 \u096d \u0939\u0948, \u0915\u093e \u0938\u0902\u0935\u0947\u0917 \u0915\u094d\u092f\u093e \u0939\u094b\u0917\u093e?<\/strong><br \/>\n<strong>(a) (mv)\u00b2<\/strong><br \/>\n<strong>(b) mv\u00b2<\/strong><br \/>\n<strong>(c) (\\(\\frac { 1 }{ 2 }\\)) mv\u00b2<\/strong><br \/>\n<strong>(d) mv<\/strong><br \/>\n<strong>(\u0909\u092a\u0930\u094b\u0915\u094d\u0924 \u092e\u0947\u0902 \u0938\u0947 \u0938\u0939\u0940 \u0935\u093f\u0915\u0932\u094d\u092a \u091a\u0941\u0928\u0947\u0902\u0964)<\/strong><br \/>\n<strong>\u0909\u0924\u094d\u0924\u0930-<\/strong> (d) mv; \u091a\u0942\u0901\u0915\u093f \u0938\u0902\u0935\u0947\u0917 = \u0926\u094d\u0930\u0935\u094d\u092f\u092e\u093e\u0928 x \u0935\u0947\u0917 \u0939\u094b\u0924\u093e \u0939\u0948\u0964<\/p>\n<p><strong>\u092a\u094d\u0930\u0966 10. \u0939\u092e \u090f\u0915 \u0932\u0915\u0921\u093c\u0940 \u0915\u0947 \u092c\u0915\u094d\u0938\u0947 \u0915\u094b 200 N \u092c\u0932 \u0932\u0917\u093e\u0915\u0930 \u0909\u0938\u0947 \u0928\u093f\u092f\u0924 \u0935\u0947\u0917 \u0938\u0947 \u092b\u093c\u0930\u094d\u0936 \u092a\u0930 \u0927\u0915\u0947\u0932\u0924\u0947 \u0939\u0948\u0902\u0964 \u092c\u0915\u094d\u0938\u0947 \u092a\u0930 \u0932\u0917\u0928\u0947 \u0935\u093e\u0932\u093e \u0918\u0930\u094d\u0937\u0923 \u092c\u0932 \u0915\u094d\u092f\u093e \u0939\u094b\u0917\u093e?<\/strong><br \/>\n<strong>\u0909\u0924\u094d\u0924\u0930-<\/strong> \u091a\u0942\u0901\u0915\u093f \u0932\u0915\u0921\u093c\u0940 \u0915\u0947 \u092c\u0915\u094d\u0938\u0947 \u0915\u094b \u0928\u093f\u092f\u0924 \u0935\u0947\u0917 (Constant velocity) \u0938\u0947 \u092b\u093c\u0930\u094d\u0936 \u092a\u0930 \u0927\u0915\u0947\u0932\u093e \u091c\u093e\u0924\u093e \u0939\u0948\u0964<br \/>\n\u0905\u0924\u0903 200 N \u0915\u093e \u092c\u0932, \u0918\u0930\u094d\u0937\u0923 \u092c\u0932 \u0915\u094b \u0938\u0902\u0924\u0941\u0932\u093f\u0924 \u0915\u0930\u0928\u0947 \u092e\u0947\u0902 \u0939\u0940 \u0932\u0917 \u091c\u093e\u0924\u093e \u0939\u0948 \u0905\u0930\u094d\u0925\u093e\u0924\u094d \u0907\u0938 \u092c\u0932 \u0915\u093e \u0915\u094b\u0908 \u092d\u0940 \u092d\u093e\u0917 \u0932\u0915\u0921\u093c\u0940 \u0915\u0947 \u092c\u0915\u094d\u0938\u0947 \u092e\u0947\u0902 \u0924\u094d\u0935\u0930\u0923 \u0909\u0924\u094d\u092a\u0928\u094d\u0928 \u0915\u0930\u0928\u0947 \u092e\u0947\u0902 \u0928\u0939\u0940\u0902 \u0932\u0917\u0924\u093e \u0939\u0948\u0964<br \/>\n\u0905\u0924\u0903 \u0918\u0930\u094d\u0937\u0923 \u092c\u0932 = \u0906\u0930\u094b\u092a\u093f\u0924 \u092c\u0932 = 200 N<\/p>\n<p><strong>\u092a\u094d\u0930\u0966 11. \u0926\u094b \u0935\u0938\u094d\u0924\u0941\u090f\u0901, \u092a\u094d\u0930\u0924\u094d\u092f\u0947\u0915 \u0915\u093e \u0926\u094d\u0930\u0935\u094d\u092f\u092e\u093e\u0928 1.5 kg \u0939\u0948, \u090f\u0915 \u0939\u0940 \u0938\u0940\u0927\u0940 \u0930\u0947\u0916\u093e \u092e\u0947\u0902 \u090f\u0915-\u0926\u0942\u0938\u0930\u0947 \u0915\u0947 \u0935\u093f\u092a\u0930\u0940\u0924 \u0926\u093f\u0936\u093e \u092e\u0947\u0902 \u0917\u0924\u093f \u0915\u0930 \u0930\u0939\u0940 \u0939\u0948\u0902\u0964 \u091f\u0915\u0930\u093e\u0928\u0947 \u0915\u0947 \u092a\u0939\u0932\u0947 \u092a\u094d\u0930\u0924\u094d\u092f\u0947\u0915 \u0915\u093e \u0935\u0947\u0917 2.5 ms<sup>-1<\/sup> \u0939\u0948\u0964 \u091f\u0915\u0930\u093e\u0928\u0947 \u0915\u0947 \u092c\u093e\u0926 \u092f\u0926\u093f \u0926\u094b\u0928\u094b\u0902 \u090f\u0915-\u0926\u0942\u0938\u0930\u0947 \u0938\u0947 \u091c\u0941\u0921\u093c \u091c\u093e\u0924\u0940 \u0939\u0948\u0902, \u0924\u092c \u0909\u0928\u0915\u093e \u0938\u092e\u094d\u092e\u093f\u0932\u093f\u0924 \u0935\u0947\u0917 \u0915\u094d\u092f\u093e \u0939\u094b\u0917\u093e?<\/strong><br \/>\n<strong>\u0909\u0924\u094d\u0924\u0930-<\/strong> \u092e\u093e\u0928 \u0932\u0940\u091c\u093f\u090f \u0915\u093f \u092a\u0939\u0932\u0940 \u0935\u0938\u094d\u0924\u0941 \u092c\u093e\u090f\u0901 \u0938\u0947 \u0926\u093e\u090f\u0901 \u091c\u093e\u0924\u0940 \u0939\u0948\u0964<br \/>\n\u0924\u0925\u093e \u0926\u0942\u0938\u0930\u0940 \u0935\u0938\u094d\u0924\u0941 \u0926\u093e\u090f\u0901 \u0938\u0947 \u092c\u093e\u090f\u0901\u0964<br \/>\n\u092a\u0939\u0932\u0940 \u0935\u0938\u094d\u0924\u0941 \u0915\u0947 \u0932\u093f\u090f<br \/>\n<img loading=\"lazy\" src=\"https:\/\/farm2.staticflickr.com\/1796\/28964688967_333225dba3_o.png\" alt=\"NCERT Solutions for Class 9 Science Chapter 9 (Hindi Medium) 8\" width=\"340\" height=\"347\" \/><\/p>\n<p><strong>\u092a\u094d\u0930\u0966 12. \u0917\u0924\u093f \u0915\u0947 \u0924\u0943\u0924\u0940\u092f \u0928\u093f\u092f\u092e \u0915\u0947 \u0905\u0928\u0941\u0938\u093e\u0930 \u091c\u092c \u0939\u092e \u0915\u093f\u0938\u0940 \u0935\u0938\u094d\u0924\u0941 \u0915\u094b \u0927\u0915\u094d\u0915\u093e \u0926\u0947\u0924\u0947 \u0939\u0948\u0902, \u0924\u094b \u0935\u0938\u094d\u0924\u0941 \u0909\u0924\u0928\u0947 \u0939\u0940 \u092c\u0932 \u0915\u0947 \u0938\u093e\u0925 \u0939\u092e\u0947\u0902 \u092d\u0940 \u0935\u093f\u092a\u0930\u0940\u0924 \u0926\u093f\u0936\u093e \u092e\u0947\u0902 \u0927\u0915\u094d\u0915\u093e \u0926\u0947\u0924\u0940 \u0939\u0948\u0964 \u092f\u0926\u093f \u0935\u0939 \u0935\u0938\u094d\u0924\u0941 \u090f\u0915 \u091f\u094d\u0930\u0915 \u0939\u0948 \u091c\u094b \u0938\u0921\u093c\u0915 \u0915\u0947 \u0915\u093f\u0928\u093e\u0930\u0947 \u0916\u0921\u093c\u093e \u0939\u0948; \u0938\u0902\u092d\u0935\u0924\u0903 \u0939\u092e\u093e\u0930\u0947 \u0926\u094d\u0935\u093e\u0930\u093e \u092c\u0932 \u0906\u0930\u094b\u092a\u093f\u0924 \u0915\u0930\u0928\u0947 \u092a\u0930 \u092d\u0940 \u0917\u0924\u093f\u0936\u0940\u0932 \u0928\u0939\u0940\u0902 \u0939\u094b \u092a\u093e\u090f\u0917\u093e\u0964 \u090f\u0915 \u0935\u093f\u0926\u094d\u092f\u093e\u0930\u094d\u0925\u0940 \u0907\u0938\u0947 \u0938\u0939\u0940 \u0938\u093e\u092c\u093f\u0924 \u0915\u0930\u0924\u0947 \u0939\u0941\u090f \u0915\u0939\u0924\u093e \u0939\u0948 \u0915\u093f \u0926\u094b\u0928\u094b\u0902 \u092c\u0932 \u0935\u093f\u092a\u0930\u0940\u0924 \u090f\u0935\u0902 \u092c\u0930\u093e\u092c\u0930 \u0939\u0948\u0902 \u091c\u094b \u090f\u0915-\u0926\u0942\u0938\u0930\u0947 \u0915\u094b \u0928\u093f\u0930\u0938\u094d\u0924 \u0915\u0930 \u0926\u0947\u0924\u0947 \u0939\u0948\u0902\u0964 \u0907\u0938 \u0924\u0930\u094d\u0915 \u092a\u0930 \u0905\u092a\u0928\u0947 \u0935\u093f\u091a\u093e\u0930 \u0926\u0947\u0902 \u0914\u0930 \u092c\u0924\u093e\u090f\u0901 \u0915\u093f \u091f\u094d\u0930\u0915 \u0917\u0924\u093f\u0936\u0940\u0932 \u0915\u094d\u092f\u094b\u0902 \u0928\u0939\u0940\u0902 \u0939\u094b \u092a\u093e\u0924\u093e?<\/strong><br \/>\n<strong>\u0909\u0924\u094d\u0924\u0930-<\/strong> \u092a\u094d\u0930\u0936\u094d\u0928\u093e\u0928\u0941\u0938\u093e\u0930 \u090f\u0915 \u0935\u093f\u0926\u094d\u092f\u093e\u0930\u094d\u0925\u0940 \u0926\u094d\u0935\u093e\u0930\u093e \u092f\u0939 \u0938\u093e\u092c\u093f\u0924 \u0915\u093f\u092f\u093e \u0917\u092f\u093e \u0915\u093f \u0926\u094b\u0928\u094b\u0902 \u092c\u0932 \u0935\u093f\u092a\u0930\u0940\u0924 \u090f\u0935\u0902 \u092c\u0930\u093e\u092c\u0930 \u0939\u0948\u0902 \u091c\u094b \u090f\u0915-\u0926\u0942\u0938\u0930\u0947 \u0915\u094b \u0928\u093f\u0930\u0938\u094d\u0924 \u0915\u0930 \u0926\u0947\u0924\u0947 \u0939\u0948\u0902, \u092c\u093f\u0932\u0915\u0941\u0932 \u0917\u0932\u0924 \u0939\u0948 \u0915\u094d\u092f\u094b\u0902\u0915\u093f \u0926\u094b\u0928\u094b\u0902 \u092c\u0932 \u0926\u094b \u092d\u093f\u0928\u094d\u0928 \u0935\u0938\u094d\u0924\u0941\u0913\u0902 \u092a\u0930 \u0906\u0930\u094b\u092a\u093f\u0924 \u0939\u094b\u0924\u0947 \u0939\u0948\u0902 \u0907\u0938\u0932\u093f\u090f \u090f\u0915-\u0926\u0942\u0938\u0930\u0947 \u0915\u094b \u0928\u093f\u0930\u0938\u094d\u0924 (Cancel) \u0915\u0930\u0928\u0947 \u0915\u093e \u092a\u094d\u0930\u0936\u094d\u0928 \u0928\u0939\u0940\u0902 \u0909\u0920\u0924\u093e\u0964 \u0935\u093e\u0938\u094d\u0924\u0935 \u092e\u0947\u0902 \u091f\u094d\u0930\u0915 \u0915\u093e \u0926\u094d\u0930\u0935\u094d\u092f\u092e\u093e\u0928 \u0905\u0924\u094d\u092f\u0927\u093f\u0915 \u0939\u094b\u0928\u0947 \u0915\u0947 \u0915\u093e\u0930\u0923 \u0907\u0938\u0915\u093e \u091c\u0921\u093c\u0924\u094d\u0935 \u092c\u0939\u0941\u0924 \u0905\u0927\u093f\u0915 \u0939\u094b\u0924\u093e \u0939\u0948 \u0924\u0925\u093e \u0939\u092e\u093e\u0930\u0947 \u0926\u094d\u0935\u093e\u0930\u093e \u0906\u0930\u094b\u092a\u093f\u0924 \u092c\u0932 \u0915\u093e \u092e\u093e\u0928 \u0915\u092e \u0939\u094b\u0928\u0947 \u0915\u0947 \u0915\u093e\u0930\u0923 \u092f\u0939 \u0938\u0921\u093c\u0915 \u0924\u0925\u093e \u092a\u0939\u093f\u090f \u0915\u0947 \u092c\u0940\u091a \u0918\u0930\u094d\u0937\u0923 \u092c\u0932 \u0915\u094b \u0916\u0924\u094d\u092e \u0915\u0930 \u092a\u093e\u0928\u0947 \u092e\u0947\u0902 \u0905\u0938\u092e\u0930\u094d\u0925 \u0939\u094b\u0924\u093e \u0939\u0948\u0964 \u0905\u0924\u0903 \u091f\u094d\u0930\u0915 \u0915\u094b \u0917\u0924\u093f\u0936\u0940\u0932 \u0915\u0930\u0928\u0947 \u0915\u0947 \u0932\u093f\u090f \u0905\u0924\u094d\u092f\u0927\u093f\u0915 \u0905\u0938\u0902\u0924\u0941\u0932\u093f\u0924 \u092c\u0932 \u0915\u0940 \u0906\u0935\u0936\u094d\u092f\u0915\u0924\u093e \u0939\u094b\u0924\u0940 \u0939\u0948\u0964<\/p>\n<p><strong>\u092a\u094d\u0930\u0966 13. 200 g \u0926\u094d\u0930\u0935\u094d\u092f\u092e\u093e\u0928 \u0915\u0940 \u090f\u0915 \u0939\u0949\u0915\u0940 \u0915\u0940 \u0917\u0947\u0902\u0926 10 ms<sup>-1<\/sup> \u0915\u0940 \u0935\u0947\u0917 \u0938\u0947 \u0938\u0940\u0927\u0940 \u0930\u0947\u0916\u093e \u092e\u0947\u0902 \u091a\u0932\u0924\u0940 \u0939\u0941\u0908 5 kg \u0926\u094d\u0930\u0935\u094d\u092f\u092e\u093e\u0928 \u0915\u0947 \u0917\u0941\u091f\u0915\u0947 \u0938\u0947 \u0938\u0902\u0918\u091f\u094d\u091f \u0915\u0930\u0924\u0940 \u0939\u0948 \u0924\u0925\u093e \u0909\u0938\u0938\u0947 \u091c\u0941\u0921\u093c \u091c\u093e\u0924\u0940 \u0939\u0948\u0964 \u0909\u0938\u0915\u0947 \u092c\u093e\u0926 \u0926\u094b\u0928\u094b\u0902 \u090f\u0915 \u0938\u093e\u0925 \u0909\u0938\u0940 \u0930\u0947\u0916\u093e \u092e\u0947\u0902 \u0917\u0924\u093f \u0915\u0930\u0924\u0947 \u0939\u0948\u0902\u0964 \u0938\u0902\u0918\u091f\u094d\u091f \u0915\u0947 \u092a\u0939\u0932\u0947 \u0914\u0930 \u0938\u0902\u0918\u091f\u094d\u091f \u0915\u0947 \u092c\u093e\u0926 \u0915\u0947 \u0915\u0941\u0932 \u0938\u0902\u0935\u0947\u0917\u094b\u0902 \u0915\u0940 \u0917\u0923\u0928\u093e \u0915\u0930\u0947\u0902\u0964 \u0926\u094b\u0928\u094b\u0902 \u0935\u0938\u094d\u0924\u0941\u0913\u0902 \u0915\u0940 \u091c\u0941\u0921\u093c\u0940 \u0939\u0941\u0908 \u0905\u0935\u0938\u094d\u0925\u093e \u092e\u0947\u0902 \u0935\u0947\u0917 \u0915\u0940 \u0917\u0923\u0928\u093e \u0915\u0930\u0947\u0902\u0964<\/strong><br \/>\n<img loading=\"lazy\" src=\"https:\/\/farm1.staticflickr.com\/853\/42996843845_11a75ccebb_o.png\" alt=\"NCERT Solutions for Class 9 Science Chapter 9 (Hindi Medium) 9\" width=\"363\" height=\"396\" \/><\/p>\n<p><strong>\u092a\u094d\u0930\u0966 14. 10 g \u0926\u094d\u0930\u0935\u094d\u092f\u092e\u093e\u0928 \u0915\u0940 \u090f\u0915 \u0917\u094b\u0932\u0940 \u0938\u0940\u0927\u0940 \u0930\u0947\u0916\u093e \u092e\u0947\u0902 150 ms<sup>-1<\/sup> \u0915\u0947 \u0935\u0947\u0917 \u0938\u0947 \u091a\u0932\u0915\u0930 \u090f\u0915 \u0932\u0915\u0921\u093c\u0940 \u0915\u0947 \u0917\u0941\u091f\u0915\u0947 \u0938\u0947 \u091f\u0915\u0930\u093e\u0924\u0940 \u0939\u0948 \u0914\u0930 0.03 s \u0915\u0947 \u092c\u093e\u0926 \u0930\u0941\u0915 \u091c\u093e\u0924\u0940 \u0939\u0948\u0964 \u0917\u094b\u0932\u0940 \u0932\u0915\u0921\u093c\u0940 \u0930\u0941\u0915 \u091c\u093e\u0924\u0940 \u0939\u0948\u0964 \u0917\u094b\u0932\u0940 \u0932\u0915\u0921\u093c\u0940 \u0915\u094b \u0915\u093f\u0924\u0928\u0940 \u0926\u0942\u0930\u0940 \u0924\u0915 \u092d\u0947\u0926\u0947\u0917\u0940? \u0932\u0915\u0921\u093c\u0940 \u0915\u0947 \u0917\u0941\u091f\u0915\u0947 \u0926\u094d\u0935\u093e\u0930\u093e \u0917\u094b\u0932\u0940 \u092a\u0930 \u0932\u0917\u093e\u090f \u0917\u090f \u092c\u0932 \u0915\u0947 \u092a\u0930\u093f\u092e\u093e\u0923 \u0915\u0940 \u0917\u0923\u0928\u093e \u0915\u0930\u0947\u0902\u0964<\/strong><br \/>\n<img loading=\"lazy\" src=\"https:\/\/farm2.staticflickr.com\/1775\/30031761888_a49f350218_o.png\" alt=\"NCERT Solutions for Class 9 Science Chapter 9 (Hindi Medium) 10\" width=\"354\" height=\"541\" \/><\/p>\n<p><strong>\u092a\u094d\u0930\u0966 15. \u090f\u0915 \u0935\u0938\u094d\u0924\u0941 \u091c\u093f\u0938\u0915\u093e \u0926\u094d\u0930\u0935\u094d\u092f\u092e\u093e\u0928 1 kg \u0939\u0948, 10 ms<sup>-1<\/sup> \u0915\u0947 \u0935\u0947\u0917 \u0938\u0947 \u090f\u0915 \u0938\u0940\u0927\u0940 \u0930\u0947\u0916\u093e \u092e\u0947\u0902 \u091a\u0932\u0924\u0947 \u0939\u0941\u090f \u0935\u093f\u0930\u093e\u092e\u093e\u0935\u0938\u094d\u0925\u093e \u092e\u0947\u0902 \u0930\u0916\u0947 5 kg \u0926\u094d\u0930\u0935\u094d\u092f\u092e\u093e\u0928 \u0915\u0947 \u090f\u0915 \u0932\u0915\u0921\u093c\u0940 \u0915\u0947 \u0917\u0941\u091f\u0915\u0947 \u0938\u0947 \u091f\u0915\u0930\u093e\u0924\u0940 \u0939\u0948\u0964 \u0909\u0938\u0915\u0947 \u092c\u093e\u0926 \u0926\u094b\u0928\u094b\u0902 \u0938\u093e\u0925-\u0938\u093e\u0925 \u0909\u0938\u0940 \u0938\u0940\u0927\u0940 \u0930\u0947\u0916\u093e \u092e\u0947\u0902 \u0917\u0924\u093f \u0915\u0930\u0924\u0947 \u0939\u0948\u0902\u0964 \u0938\u0902\u0918\u091f\u094d\u091f \u0915\u0947 \u092a\u0939\u0932\u0947 \u0924\u0925\u093e \u092c\u093e\u0926 \u0915\u0947 \u0915\u0941\u0932 \u0938\u0902\u0935\u0947\u0917\u094b\u0902 \u0915\u0940 \u0917\u0923\u0928\u093e \u0915\u0930\u0947\u0902\u0964 \u0906\u092a\u0938 \u092e\u0947\u0902 \u091c\u0941\u0921\u093c\u0947 \u0939\u0941\u090f \u0938\u0902\u092f\u094b\u091c\u0928 \u0915\u0947 \u0935\u0947\u0917 \u0915\u0940 \u092d\u0940 \u0917\u0923\u0928\u093e \u0915\u0930\u0947\u0902\u0964<\/strong><br \/>\n<img loading=\"lazy\" src=\"https:\/\/farm2.staticflickr.com\/1816\/43901576751_7cb427bc10_o.png\" alt=\"NCERT Solutions for Class 9 Science Chapter 9 (Hindi Medium) 11\" width=\"358\" height=\"307\" \/><\/p>\n<p><strong>\u092a\u094d\u0930\u0966 16. 100 kg \u0926\u094d\u0930\u0935\u094d\u092f\u092e\u093e\u0928 \u0915\u0940 \u090f\u0915 \u0935\u0938\u094d\u0924\u0941 \u0915\u093e \u0935\u0947\u0917 \u0938\u092e\u093e\u0928 \u0924\u094d\u0935\u0930\u0923 \u0938\u0947 \u091a\u0932\u0924\u0947 \u0939\u0941\u090f 6s \u092e\u0947\u0902 5 ms<sup>-1<\/sup> \u0938\u0947 8 ms<sup>-1<\/sup> \u0939\u094b \u091c\u093e\u0924\u093e \u0939\u0948\u0964 \u0935\u0938\u094d\u0924\u0941 \u0915\u0947 \u092a\u0939\u0932\u0947 \u0914\u0930 \u092c\u093e\u0926 \u0915\u0947 \u0938\u0902\u0935\u0947\u0917\u094b\u0902 \u0915\u0940 \u0917\u0923\u0928\u093e \u0915\u0930\u0947\u0902\u0964 \u0909\u0938 \u092c\u0932\u00a0<\/strong><strong>\u0915\u0947 \u092a\u0930\u093f\u092e\u093e\u0923 \u0915\u0940 \u0917\u0923\u0928\u093e \u0915\u0930\u0947\u0902 \u091c\u094b \u0909\u0938 \u0935\u0938\u094d\u0924\u0941 \u092a\u0930 \u0906\u0930\u094b\u092a\u093f\u0924 \u0939\u0948\u0964<\/strong><br \/>\n<img loading=\"lazy\" src=\"https:\/\/farm1.staticflickr.com\/941\/43901576971_3a57a0c06d_o.png\" alt=\"NCERT Solutions for Class 9 Science Chapter 9 (Hindi Medium) 12\" width=\"346\" height=\"261\" \/><\/p>\n<p><strong>\u092a\u094d\u0930\u0966 17. \u0905\u0916\u094d\u0924\u0930, \u0915\u093f\u0930\u0923 \u0914\u0930 \u0930\u093e\u0939\u0941\u0932 \u0915\u093f\u0938\u0940 \u0930\u093e\u091c\u092e\u093e\u0930\u094d\u0917 \u092a\u0930 \u092c\u0939\u0941\u0924 \u0924\u0940\u0935\u094d\u0930 \u0917\u0924\u093f \u0938\u0947 \u091a\u0932\u0924\u0940 \u0939\u0941\u0908 \u0915\u093e\u0930 \u092e\u0947\u0902 \u0938\u0935\u093e\u0930 \u0939\u0948\u0902, \u0905\u091a\u093e\u0928\u0915 \u0909\u0921\u093c\u0924\u093e \u0939\u0941\u0906 \u0915\u094b\u0908 \u0915\u0940\u0921\u093c\u093e, \u0917\u093e\u0921\u093c\u0940 \u0915\u0947 \u0938\u093e\u092e\u0928\u0947 \u0915\u0947 \u0936\u0940\u0936\u0947 \u0938\u0947 \u0906 \u091f\u0915\u0930\u093e\u092f\u093e \u0914\u0930 \u0935\u0939 \u0936\u0940\u0936\u0947 \u0938\u0947 \u091a\u093f\u092a\u0915 \u0917\u092f\u093e\u0964 \u0905\u0916\u094d\u0924\u0930 \u0914\u0930 \u0915\u093f\u0930\u0923 \u0907\u0938 \u0938\u094d\u0925\u093f\u0924\u093f \u092a\u0930 \u0935\u093f\u0935\u093e\u0926 \u0915\u0930\u0924\u0947 \u0939\u0948\u0902\u0964 \u0915\u093f\u0930\u0923 \u0915\u093e \u092e\u093e\u0928\u0928\u093e \u0939\u0948 \u0915\u093f \u0915\u0940\u0921\u093c\u0947 \u0915\u0947 \u0938\u0902\u0935\u0947\u0917 \u092a\u0930\u093f\u0935\u0930\u094d\u0924\u0928 \u0915\u093e \u092a\u0930\u093f\u092e\u093e\u0923 \u0915\u093e\u0930 \u0915\u0947 \u0938\u0902\u0935\u0947\u0917 \u092a\u0930\u093f\u0935\u0930\u094d\u0924\u0928 \u0915\u0947 \u092a\u0930\u093f\u092e\u093e\u0923 \u0915\u0940 \u0905\u092a\u0947\u0915\u094d\u0937\u093e \u092c\u0939\u0941\u0924 \u0905\u0927\u093f\u0915 \u0939\u0948\u0964 (\u0915\u094d\u092f\u094b\u0902\u0915\u093f \u0915\u0940\u0921\u093c\u0947 \u0915\u0947 \u0935\u0947\u0917 \u092e\u0947\u0902 \u092a\u0930\u093f\u0935\u0930\u094d\u0924\u0928 \u0915\u093e \u092e\u093e\u0928 \u0915\u093e\u0930 \u0915\u0947 \u0935\u0947\u0917 \u092e\u0947\u0902 \u092a\u0930\u093f\u0935\u0930\u094d\u0924\u0928 \u0915\u0947 \u092e\u093e\u0928 \u0938\u0947 \u092c\u0939\u0941\u0924 \u0905\u0927\u093f\u0915 \u0939\u0948\u0964) \u0905\u0916\u094d\u0924\u0930 \u0928\u0947 \u0915\u0939\u093e \u0915\u093f \u091a\u0942\u0902\u0915\u093f \u0915\u093e\u0930 \u0915\u093e \u0935\u0947\u0917 \u092c\u0939\u0941\u0924 \u0905\u0927\u093f\u0915 \u0925\u093e \u0905\u0924\u0903 \u0915\u093e\u0930 \u0928\u0947 \u0915\u0940\u0921\u093c\u0947 \u092a\u0930 \u092c\u0939\u0941\u0924 \u0905\u0927\u093f\u0915 \u092c\u0932 \u0932\u0917\u093e\u092f\u093e \u091c\u093f\u0938\u0915\u0947 \u0915\u093e\u0930\u0923 \u0915\u0940\u0921\u093c\u0947 \u0915\u0940 \u092e\u094c\u0924 \u0939\u094b \u0917\u0908\u0964 \u0930\u093e\u0939\u0941\u0932 \u0928\u0947 \u090f\u0915 \u0928\u092f\u093e \u0924\u0930\u094d\u0915 \u0926\u0947\u0924\u0947 \u0939\u0941\u090f \u0915\u0939\u093e \u0915\u093f \u0915\u093e\u0930 \u0924\u0925\u093e \u0915\u0940\u0921\u093c\u093e \u0926\u094b\u0928\u094b\u0902 \u092a\u0930 \u0938\u092e\u093e\u0928 \u092c\u0932 \u0932\u0917\u093e \u0914\u0930 \u0926\u094b\u0928\u094b\u0902 \u0915\u0947 \u0938\u0902\u0935\u0947\u0917 \u092e\u0947\u0902 \u092c\u0930\u093e\u092c\u0930 \u092a\u0930\u093f\u0935\u0930\u094d\u0924\u0928 \u0939\u0941\u0906\u0964 \u0907\u0928 \u0935\u093f\u091a\u093e\u0930\u094b\u0902 \u092a\u0930 \u0905\u092a\u0928\u0940 \u092a\u094d\u0930\u0924\u093f\u0915\u094d\u0930\u093f\u092f\u093e \u0926\u0947\u0902\u0964<\/strong><br \/>\n<strong>\u0909\u0924\u094d\u0924\u0930-<\/strong><br \/>\n(a) \u0915\u093f\u0930\u0923 \u0915\u093e \u092f\u0939 \u092e\u093e\u0928\u0928\u093e \u0915\u093f \u0915\u0940\u0921\u093c\u0947 \u0915\u0947 \u0938\u0902\u0935\u0947\u0917 \u092a\u0930\u093f\u0935\u0930\u094d\u0924\u0928 \u0915\u093e \u092a\u0930\u093f\u092e\u093e\u0923 \u0915\u093e\u0930 \u0915\u0947 \u0938\u0902\u0935\u0947\u0917 \u092a\u0930\u093f\u0935\u0930\u094d\u0924\u0928 \u0915\u0947 \u092a\u0930\u093f\u092e\u093e\u0923 \u0915\u0940 \u0905\u092a\u0947\u0915\u094d\u0937\u093e \u092c\u0939\u0941\u0924 \u0905\u0927\u093f\u0915 \u0939\u0948\u0964 \u092f\u0939 \u0924\u0930\u094d\u0915 \u0917\u0932\u0924 \u0939\u0948\u0964<\/p>\n<p>(b) \u0905\u0916\u093c\u094d\u0924\u0930 \u0915\u093e \u0924\u0930\u094d\u0915 \u092d\u0940 \u0917\u0932\u0924 \u0939\u0948\u0964<\/p>\n<p>(c) \u0930\u093e\u0939\u0941\u0932 \u0915\u093e \u0924\u0930\u094d\u0915 \u0938\u0939\u0940 \u0939\u0948\u0964 \u0926\u094b\u0928\u094b\u0902 \u092a\u0930 \u0938\u092e\u093e\u0928 \u092c\u0932 \u0932\u0917\u0947\u0917\u093e \u0915\u094d\u092f\u094b\u0902\u0915\u093f \u0915\u094d\u0930\u093f\u092f\u093e \u0924\u0925\u093e \u092a\u094d\u0930\u0924\u093f\u0915\u094d\u0930\u093f\u092f\u093e \u0938\u092e\u093e\u0928 \u092a\u0930\u0902\u0924\u0941 \u0935\u093f\u092a\u0930\u0940\u0924 \u0926\u093f\u0936\u093e \u092e\u0947\u0902 \u0915\u094d\u0930\u093f\u092f\u093e\u0936\u0940\u0932 \u0939\u094b\u0924\u0947 \u0939\u0948\u0902\u0964 \u0938\u093e\u0925 \u0939\u0940, \u0938\u0902\u0935\u0947\u0917 \u092e\u0947\u0902 \u092a\u0930\u093f\u0935\u0930\u094d\u0924\u0928 \u0915\u093e \u092a\u0930\u093f\u092e\u093e\u0923 \u092d\u0940 \u0938\u092e\u093e\u0928 \u0939\u0940 \u0930\u0939\u0924\u093e \u0939\u0948\u0964<br \/>\n\u092a\u094d\u0930\u093e\u0930\u0902\u092d\u093f\u0915 \u0938\u0902\u0935\u0947\u0917 (\u091f\u0915\u094d\u0915\u0930 \u0915\u0947 \u092a\u0942\u0930\u094d\u0935) = \u0905\u0902\u0924\u093f\u092e \u0938\u0902\u0935\u0947\u0917 (\u091f\u0915\u094d\u0915\u0930 \u0915\u0947 \u092c\u093e\u0926)<br \/>\ni.e., [m<sub>1<\/sub>u<sub>1<\/sub> + m<sub>2<\/sub>u<sub>2<\/sub> = m<sub>1<\/sub>v<sub>1<\/sub> +m<sub>2<\/sub>v<sub>2<\/sub>]<br \/>\n\u0938\u0902\u0935\u0947\u0917 \u0938\u0902\u0930\u0915\u094d\u0937\u0923 \u0915\u0947 \u0928\u093f\u092f\u092e\u093e\u0928\u0941\u0938\u093e\u0930<br \/>\n\u0938\u094d\u092a\u0937\u094d\u091f\u0924\u0903 \u0926\u094b\u0928\u094b\u0902 \u0935\u0938\u094d\u0924\u0941\u0913\u0902 (\u0915\u0940\u0921\u093c\u0947 \u090f\u0935\u0902 \u0915\u093e\u0930) \u092a\u0930 \u0938\u092e\u093e\u0928 \u092c\u0932 \u0906\u0930\u094b\u092a\u093f\u0924 \u0939\u094b\u0917\u093e \u0924\u0925\u093e \u0938\u0902\u0935\u0947\u0917 \u092e\u0947\u0902 \u092a\u0930\u093f\u0935\u0930\u094d\u0924\u0928 \u092d\u0940 \u0938\u092e\u093e\u0928 \u0939\u094b\u0917\u093e\u0964 \u0915\u0940\u0921\u093c\u0947 \u0915\u093e \u0926\u094d\u0930\u0935\u094d\u092f\u092e\u093e\u0928 \u0905\u0924\u094d\u092f\u0927\u093f\u0915 \u0915\u092e \u0939\u094b\u0928\u0947 \u0915\u0947 \u0915\u093e\u0930\u0923 \u0909\u0938\u0915\u0947 \u0935\u0947\u0917 \u092e\u0947\u0902 \u092c\u0939\u0941\u0924 \u0905\u0927\u093f\u0915 \u092a\u0930\u093f\u0935\u0930\u094d\u0924\u0928 \u0939\u094b\u0924\u093e \u0939\u0948 \u091c\u093f\u0938\u0938\u0947 \u0935\u0939 \u0936\u0940\u0936\u0947 \u0938\u0947 \u091a\u093f\u092a\u0915 \u091c\u093e\u0924\u093e \u0939\u0948\u0964<\/p>\n<p><strong>\u092a\u094d\u0930\u0966 18. \u090f\u0915 10 kg \u0926\u094d\u0930\u0935\u094d\u092f\u092e\u093e\u0928 \u0915\u0940 \u0918\u0902\u091f\u0940 80 cm \u0915\u0940 \u090a\u0901\u091a\u093e\u0908 \u0938\u0947 \u092b\u093c\u0930\u094d\u0936 \u092a\u0930 \u0917\u093f\u0930\u0940\u0964 \u0907\u0938 \u0905\u0935\u0938\u094d\u0925\u093e \u092e\u0947\u0902 \u0918\u0902\u091f\u0940 \u0926\u094d\u0935\u093e\u0930\u093e \u092b\u093c\u0930\u094d\u0936 \u092a\u0930 \u0938\u094d\u0925\u093e\u0928\u093e\u0902\u0924\u0930\u093f\u0924 \u0938\u0902\u0935\u0947\u0917 \u0915\u0947 \u092e\u093e\u0928 \u0915\u0940 \u0917\u0923\u0928\u093e \u0915\u0930\u0947\u0902\u0964 \u092a\u0930\u093f\u0915\u0932\u0928 \u092e\u0947\u0902 \u0938\u0930\u0932\u0924\u093e \u0939\u0947\u0924\u0941 \u0928\u0940\u091a\u0947 \u0915\u0940 \u0913\u0930 \u0926\u093f\u0937\u094d\u091f \u0924\u094d\u0935\u0930\u0923 \u0915\u093e \u092e\u093e\u0928 10 ms<sup>-2<\/sup>\u00a0\u0932\u0947\u0902\u0964<\/strong><br \/>\n<img loading=\"lazy\" src=\"https:\/\/farm1.staticflickr.com\/929\/42996844335_8803786f26_o.png\" alt=\"NCERT Solutions for Class 9 Science Chapter 9 (Hindi Medium) 13\" width=\"363\" height=\"330\" \/><\/p>\n<p><strong>NCERT (\u092a\u0943\u0937\u094d\u0920 \u0938\u0902\u0916\u094d\u092f\u093e-144)<\/strong><\/p>\n<p><strong>\u092a\u094d\u0930\u0966 A1. \u090f\u0915 \u0935\u0938\u094d\u0924\u0941 \u0915\u0940 \u0917\u0924\u093f \u0915\u0940 \u0905\u0935\u0938\u094d\u0925\u093e \u092e\u0947\u0902 \u0926\u0942\u0930\u0940 \u0938\u092e\u092f \u0938\u093e\u0930\u0923\u0940 \u0928\u093f\u092e\u094d\u0928\u0935\u0924\u094d \u0939\u0948 :<\/strong><br \/>\n<img loading=\"lazy\" src=\"https:\/\/farm1.staticflickr.com\/859\/43901577421_d9a5624253_o.png\" alt=\"NCERT Solutions for Class 9 Science Chapter 9 (Hindi Medium) 14\" width=\"323\" height=\"249\" \/><br \/>\n<strong>(a) \u0924\u094d\u0935\u0930\u0923 \u0915\u0947 \u092c\u093e\u0930\u0947 \u092e\u0947\u0902 \u0906\u092a \u0915\u094d\u092f\u093e \u0928\u093f\u0937\u094d\u0915\u0930\u094d\u0937 \u0928\u093f\u0915\u093e\u0932 \u0938\u0915\u0924\u0947 \u0939\u0948\u0902? \u0915\u094d\u092f\u093e \u092f\u0939 \u0928\u093f\u092f\u0924 \u0939\u0948? \u092c\u0922\u093c \u0930\u0939\u093e \u0939\u0948? \u0918\u091f \u0930\u0939\u093e \u0939\u0948? \u092f\u093e \u0936\u0942\u0928\u094d\u092f \u0939\u0948?<\/strong><br \/>\n<strong>(b) \u0906\u092a \u0935\u0938\u094d\u0924\u0941 \u092a\u0930 \u0932\u0917\u0928\u0947 \u0935\u093e\u0932\u0947 \u092c\u0932 \u0915\u0947 \u092c\u093e\u0930\u0947 \u092e\u0947\u0902 \u0915\u094d\u092f\u093e \u0928\u093f\u0937\u094d\u0915\u0930\u094d\u0937 \u0928\u093f\u0915\u093e\u0932 \u0938\u0915\u0924\u0947 \u0939\u0948\u0902?<\/strong><br \/>\n<strong>\u0909\u0924\u094d\u0924\u0930-<\/strong><br \/>\n(a) \u091c\u092c \u0938\u092e\u092f t = 0, \u0924\u094b \u0926\u0942\u0930\u0940 S = (0)<sup>3<\/sup> = 0<br \/>\n\u091c\u092c t = 1, \u0924\u094b S = (1)<sup>3<\/sup> = 1<br \/>\n\u091c\u092c t = 2, \u0924\u094b S = 2<sup>3<\/sup> = 8<br \/>\n\u0907\u0938\u0940 \u092a\u094d\u0930\u0915\u093e\u0930, \u0905\u0928\u094d\u092f \u0938\u092d\u0940 \u092e\u093e\u0928\u094b\u0902 \u0915\u0947 \u0932\u093f\u090f\u0964 \u0905\u0924\u0903 \u0926\u0940 \u0917\u0908 \u0924\u093e\u0932\u093f\u0915\u093e \u0938\u0947 \u0938\u094d\u092a\u0937\u094d\u091f \u0939\u0948 \u0915\u093f [s \u221d t<sup>3<\/sup>]<br \/>\n\u0905\u0930\u094d\u0925\u093e\u0924\u094d \u0926\u0942\u0930\u0940 \u221d (\u0938\u092e\u092f)<sup>3<\/sup><br \/>\n\u091a\u0942\u0901\u0915\u093f \u0926\u0942\u0930\u0940, \u0938\u092e\u092f \u0915\u0947 \u0918\u0928 (Cube) \u0915\u0947 \u0938\u092e\u093e\u0928\u0941\u092a\u093e\u0924\u0940 \u0939\u0948 \u0905\u0924\u0903 \u0924\u094d\u0935\u0930\u0923 \u0938\u092e\u092f \u0915\u0947 \u0938\u093e\u0925 \u090f\u0915\u0938\u092e\u093e\u0928 \u0930\u0942\u092a \u0938\u0947 \u092c\u0922\u093c \u0930\u0939\u093e \u0939\u0948\u0964<\/p>\n<p>(b) \u0939\u092e \u091c\u093e\u0928\u0924\u0947 \u0939\u0948\u0902 \u0915\u093f F = ma i.e., F \u221d a \u092f\u093e a \u221d F \u091a\u0942\u0901\u0915\u093f \u0924\u094d\u0935\u0930\u0923 \u0915\u093e \u092e\u093e\u0928 \u0938\u092e\u092f \u0915\u0947 \u0938\u093e\u0925 \u090f\u0915\u0938\u092e\u093e\u0928 \u0930\u0942\u092a \u0938\u0947 \u092c\u0922\u093c \u0930\u0939\u093e \u0939\u0948\u0964 \u0905\u0924\u0903 \u0935\u0938\u094d\u0924\u0941 \u092a\u0930 \u0906\u0930\u094b\u092a\u093f\u0924 \u092c\u0932 (\u0932\u0917\u0928\u0947 \u0935\u093e\u0932\u0947 \u092c\u0932) \u0915\u093e \u092e\u093e\u0928 \u092d\u0940 \u0938\u092e\u092f \u0915\u0947 \u0938\u093e\u0925 \u090f\u0915\u0938\u092e\u093e\u0928 \u0930\u0942\u092a \u0938\u0947 \u092c\u0922\u093c\u0947\u0917\u093e\u0964<\/p>\n<p><strong>\u092a\u094d\u0930\u0966 A2. 1200 kg \u0926\u094d\u0930\u0935\u094d\u092f\u092e\u093e\u0928 \u0915\u0940 \u0915\u093e\u0930 \u0915\u094b \u090f\u0915 \u0938\u092e\u0924\u0932 \u0938\u0921\u093c\u0915 \u092a\u0930 \u0926\u094b \u0935\u094d\u092f\u0915\u094d\u0924\u093f \u0938\u092e\u093e\u0928 \u0935\u0947\u0917 \u0938\u0947 \u0927\u0915\u094d\u0915\u093e \u0926\u0947\u0924\u0947 \u0939\u0948\u0902\u0964 \u0909\u0938\u0940 \u0915\u093e\u0930 \u0915\u094b \u0924\u0940\u0928 \u0935\u094d\u092f\u0915\u094d\u0924\u093f\u092f\u094b\u0902 \u0926\u094d\u0935\u093e\u0930\u093e \u0927\u0915\u094d\u0915\u093e \u0926\u0947\u0915\u0930 0.2 ms<sup>-2<\/sup>\u00a0\u0915\u093e \u0924\u094d\u0935\u0930\u0923 \u0909\u0924\u094d\u092a\u0928\u094d\u0928 \u0915\u093f\u092f\u093e \u091c\u093e\u0924\u093e \u0939\u0948\u0964 \u0915\u093f\u0924\u0928\u0947 \u092c\u0932 \u0915\u0947 \u0938\u093e\u0925 \u092a\u094d\u0930\u0924\u094d\u092f\u0947\u0915 \u0935\u094d\u092f\u0915\u094d\u0924\u093f \u0915\u093e\u0930 \u0915\u094b \u0927\u0915\u0947\u0932 \u092a\u093e\u0924\u093e \u0939\u0948\u0964 (\u092e\u093e\u0928 \u0932\u0947\u0902 \u0915\u093f \u0938\u092d\u0940 \u0935\u094d\u092f\u0915\u094d\u0924\u093f \u0938\u092e\u093e\u0928 \u092a\u0947\u0936\u0940\u092f \u092c\u0932 \u0915\u0947 \u0938\u093e\u0925 \u0915\u093e\u0930 \u0915\u094b \u0927\u0915\u094d\u0915\u093e \u0926\u0947\u0924\u0947 \u0939\u0948\u0902\u0964)<\/strong><br \/>\n<strong>\u0909\u0924\u094d\u0924\u0930-<\/strong> \u092e\u093e\u0928\u093e \u0915\u093f \u092a\u094d\u0930\u0924\u094d\u092f\u0947\u0915 \u0935\u094d\u092f\u0915\u094d\u0924\u093f F \u092c\u0932 \u0932\u0917\u093e\u0924\u093e \u0939\u0948\u0964<br \/>\n\u091c\u092c \u0915\u093e\u0930 \u0915\u094b \u0926\u094b \u0935\u094d\u092f\u0915\u094d\u0924\u093f \u0927\u0915\u094d\u0915\u093e \u0926\u0947\u0924\u0947 \u0939\u0948\u0902 \u0924\u094b \u0915\u093e\u0930 \u092e\u0947\u0902 \u0924\u094d\u0935\u0930\u0923 \u0909\u0924\u094d\u092a\u0928\u094d\u0928 \u0928\u0939\u0940\u0902 \u0939\u094b\u0924\u093e \u0939\u0948 \u0905\u0924\u0903 F + F = 2 F \u092c\u0932 \u0918\u0930\u094d\u0937\u0923 \u092c\u0932 (f) \u0926\u094d\u0935\u093e\u0930\u093e \u0938\u0902\u0924\u0941\u0932\u093f\u0924 \u0939\u094b \u091c\u093e\u0924\u093e \u0939\u0948 \u091c\u094b \u0935\u093f\u092a\u0930\u0940\u0924 \u0926\u093f\u0936\u093e \u0938\u0947 \u0932\u0917\u0924\u093e \u0939\u0948\u0964<br \/>\n\u0905\u0924\u0903 f = 2F &#8230;(1)<br \/>\n\u0935\u0939 \u092c\u0932 \u091c\u094b \u0915\u093e\u0930 \u092e\u0947\u0902 \u0924\u094d\u0935\u0930\u0923 \u0909\u0924\u094d\u092a\u0928\u094d\u0928 \u0915\u0930 \u0926\u0947\u0924\u093e \u0939\u0948\u0964<br \/>\n= 3F &#8211; f<br \/>\n\u0924\u0940\u0928 \u0935\u094d\u092f\u0915\u094d\u0924\u093f\u092f\u094b\u0902 \u0926\u094d\u0935\u093e\u0930\u093e \u092c\u0932 \u0932\u0917\u093e\u0928\u0947 \u092a\u0930 \u0915\u093e\u0930 \u092e\u0947\u0902 \u0924\u094d\u0935\u0930\u0923 \u0909\u0924\u094d\u092a\u0928\u094d\u0928 \u0939\u094b\u0924\u093e \u0939\u0948\u0964 i.e., F + F + F = 3 F<br \/>\n= 3F -2F [\u0938\u092e\u0940\u0966 1 \u0938\u0947 \u092e\u093e\u0928 \u0930\u0916\u0928\u0947 \u092a\u0930] = F<br \/>\n\u0905\u0924: F = m x a = 1200 kg x 0.2 ms<sup>-2<\/sup>\u00a0= 240 N<\/p>\n<p><strong>\u092a\u094d\u0930\u0966 A3. 500 g \u0926\u094d\u0930\u0935\u094d\u092f\u092e\u093e\u0928 \u0915\u0947 \u090f\u0915 \u0939\u0925\u094c\u0921\u093c\u0947 \u0926\u094d\u0935\u093e\u0930\u093e 50 ms<sup>-1<\/sup> \u0935\u0947\u0917 \u0938\u0947 \u090f\u0915 \u0915\u0940\u0932 \u092a\u0930 \u092a\u094d\u0930\u0939\u093e\u0930 \u0915\u093f\u092f\u093e \u091c\u093e\u0924\u093e \u0939\u0948\u0964 \u0915\u0940\u0932 \u0926\u094d\u0935\u093e\u0930\u093e \u0939\u0925\u094c\u0921\u093c\u0947 \u0915\u094b \u092c\u0939\u0941\u0924 \u0915\u092e \u0938\u092e\u092f 0.01 s \u092e\u0947\u0902 \u0939\u0940 \u0930\u094b\u0915 \u0926\u093f\u092f\u093e \u091c\u093e\u0924\u093e \u0939\u0948\u0964 \u0915\u0940\u0932 \u0915\u0947 \u0926\u094d\u0935\u093e\u0930\u093e \u0939\u0925\u094c\u0921\u093c\u0947 \u092a\u0930 \u0932\u0917\u093e\u090f \u0917\u090f \u092c\u0932 \u0915\u093e \u092a\u0930\u093f\u0915\u0932\u0928 \u0915\u0930\u0947\u0902\u0964<\/strong><br \/>\n<strong>\u0909\u0924\u094d\u0924\u0930-<\/strong> \u0939\u0925\u094c\u0921\u093c\u0947 \u0915\u093e \u0926\u094d\u0930\u0935\u094d\u092f\u092e\u093e\u0928, m = 500 g = \\(\\frac { 500 }{ 1000 }\\) = 0.5 kg<br \/>\n\u0939\u0925\u094c\u0921\u093c\u0947 \u0915\u093e \u092a\u094d\u0930\u093e\u0930\u0902\u092d\u093f\u0915 \u0935\u0947\u0917, u = 50 ms<sup>-1<\/sup><br \/>\n\u0905\u0902\u0924\u093f\u092e \u0935\u0947\u0917, v = 0 (\u091a\u0942\u0902\u0915\u093f \u0939\u0925\u094c\u0921\u093c\u093e \u0930\u0941\u0915 \u091c\u093e\u0924\u093e \u0939\u0948)<br \/>\n\u0938\u092e\u092f, t = 0.01 s<br \/>\n\u0924\u094d\u0935\u0930\u0923, g = ?<br \/>\n\u0905\u092c, \u0917\u0924\u093f \u0915\u0947 \u0938\u092e\u0940\u0915\u0930\u0923 v = u + at \u0926\u094d\u0935\u093e\u0930\u093e<br \/>\n0 = 50 + a x 0.01 s<br \/>\n-50 = (0.01) a<br \/>\na =- 5000 ms<sup>-2<\/sup><br \/>\n\u0939\u092e \u091c\u093e\u0928\u0924\u0947 \u0939\u0948\u0902 \u0915\u093f F = m x a<br \/>\n\u21d2 F = (0.5 kg) x (-5000 ms<sup>-2<\/sup>) = &#8211; 2500 N<br \/>\n\u090b\u0923\u093e\u0924\u094d\u092e\u0915 \u091a\u093f\u0939\u094d\u0928 \u092f\u0939 \u0926\u0930\u094d\u0936\u093e\u0924\u093e \u0939\u0948 \u0915\u093f \u0915\u0940\u0932 \u0915\u0947 \u0926\u094d\u0935\u093e\u0930\u093e \u0932\u0917\u093e\u092f\u093e<br \/>\n\u0917\u092f\u093e \u092c\u0932 \u0917\u0924\u093f \u0915\u0947 \u0935\u093f\u092a\u0930\u0940\u0924 \u0926\u093f\u0936\u093e \u092e\u0947\u0902 \u0939\u094b\u0924\u093e \u0939\u0948\u0964<\/p>\n<p><strong>\u092a\u094d\u0930\u0966 A4. \u090f\u0915 1200 kg \u0926\u094d\u0930\u0935\u094d\u092f\u092e\u093e\u0928 \u0915\u0940 \u092e\u094b\u091f\u0930\u0915\u093e\u0930 90 km\/h \u0915\u0940 \u0935\u0947\u0917 \u0938\u0947 \u090f\u0915 \u0938\u0930\u0932 \u0930\u0947\u0916\u093e \u0915\u0947 \u0905\u0928\u0941\u0926\u093f\u0936 \u091a\u0932 \u0930\u0939\u0940 \u0939\u0948\u0964 \u0909\u0938\u0915\u093e \u0935\u0947\u0917 \u092c\u093e\u0939\u0930\u0940 \u0905\u0938\u0902\u0924\u0941\u0932\u093f\u0924 \u092c\u0932 \u0932\u0917\u0928\u0947 \u0915\u0947 \u0915\u093e\u0930\u0923 4 s \u092e\u0947\u0902 \u0918\u091f\u0915\u0930 18 km\/h \u0939\u094b \u091c\u093e\u0924\u093e \u0939\u0948\u0964 \u0924\u094d\u0935\u0930\u0923 \u0914\u0930 \u0938\u0902\u0935\u0947\u0917 \u092e\u0947\u0902 \u092a\u0930\u093f\u0935\u0930\u094d\u0924\u0928 \u0915\u093e \u092a\u0930\u093f\u0915\u0932\u0928 \u0915\u0930\u0947\u0902\u0964 \u0932\u0917\u0928\u0947 \u0935\u093e\u0932\u0947 \u092c\u0932 \u0915\u0947 \u092a\u0930\u093f\u092e\u093e\u0923 \u0915\u093e \u092d\u0940 \u092a\u0930\u093f\u0915\u0932\u0928 \u0915\u0930\u0947\u0902\u0964<\/strong><br \/>\n<strong>\u0909\u0924\u094d\u0924\u0930-<\/strong><br \/>\n<img loading=\"lazy\" src=\"https:\/\/farm2.staticflickr.com\/1818\/42996844535_587df50fc0_o.png\" alt=\"NCERT Solutions for Class 9 Science Chapter 9 (Hindi Medium) 15\" width=\"250\" height=\"79\" \/><br \/>\n<img loading=\"lazy\" src=\"https:\/\/farm2.staticflickr.com\/1839\/42996844705_47f78fcf5f_o.png\" alt=\"NCERT Solutions for Class 9 Science Chapter 9 (Hindi Medium) 16\" width=\"359\" height=\"357\" \/><\/p>\n<p>Hope given NCERT Solutions for Class 9 Science Chapter 9\u00a0are helpful to complete your homework.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>NCERT Solutions for Class 9 Science Chapter 9 Force and Laws of Motion (Hindi Medium) These Solutions are part of NCERT Solutions for Class 9 Science in Hindi Medium. Here we have given NCERT Solutions for Class 9 Science Chapter 9 Force and Laws of Motion. \u092a\u093e\u0920\u0917\u0924 \u0939\u0932 \u092a\u094d\u0930\u0936\u094d\u0928 (NCERT IN-TEXT QUESTIONS SOLVED) NCERT \u092a\u093e\u0920\u094d\u092f\u092a\u0941\u0938\u094d\u0924\u0915 &#8230; <a title=\"NCERT Solutions for Class 9 Science Chapter 9 Force and Laws of Motion (Hindi Medium)\" class=\"read-more\" href=\"https:\/\/mcqbooks.com\/ncert-solutions-for-class-9-science-chapter-9-hindi\/\" aria-label=\"More on NCERT Solutions for Class 9 Science Chapter 9 Force and Laws of Motion (Hindi Medium)\">Read more<\/a><\/p>\n","protected":false},"author":10,"featured_media":7154,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"spay_email":""},"categories":[6],"tags":[],"jetpack_featured_media_url":"https:\/\/mcqbooks.com\/wp-content\/uploads\/2018\/08\/NCERT-Solutions-for-Class-9-Science-Chapter-9-Force-and-Laws-of-Motion-Hindi-Medium.png","_links":{"self":[{"href":"https:\/\/mcqbooks.com\/wp-json\/wp\/v2\/posts\/1716"}],"collection":[{"href":"https:\/\/mcqbooks.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/mcqbooks.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/mcqbooks.com\/wp-json\/wp\/v2\/users\/10"}],"replies":[{"embeddable":true,"href":"https:\/\/mcqbooks.com\/wp-json\/wp\/v2\/comments?post=1716"}],"version-history":[{"count":1,"href":"https:\/\/mcqbooks.com\/wp-json\/wp\/v2\/posts\/1716\/revisions"}],"predecessor-version":[{"id":37001,"href":"https:\/\/mcqbooks.com\/wp-json\/wp\/v2\/posts\/1716\/revisions\/37001"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/mcqbooks.com\/wp-json\/wp\/v2\/media\/7154"}],"wp:attachment":[{"href":"https:\/\/mcqbooks.com\/wp-json\/wp\/v2\/media?parent=1716"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mcqbooks.com\/wp-json\/wp\/v2\/categories?post=1716"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mcqbooks.com\/wp-json\/wp\/v2\/tags?post=1716"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}