{"id":4140,"date":"2016-05-06T11:49:00","date_gmt":"2016-05-06T11:49:00","guid":{"rendered":"http:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-9-science-forces-and-laws-of-motion-part-1\/"},"modified":"2018-06-07T12:43:34","modified_gmt":"2018-06-07T07:13:34","slug":"ncert-solutions-for-class-9-science-forces-and-laws-of-motion-part-1","status":"publish","type":"post","link":"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-9-science-forces-and-laws-of-motion-part-1\/","title":{"rendered":"NCERT Solutions for Class 9 Science Forces and Laws of Motion part 1"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_76 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 eztoc-toggle-hide-by-default' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-9-science-forces-and-laws-of-motion-part-1\/#NCERT_Class_9_Science_Chapter_wise_Solutions\" >NCERT Class 9 Science Chapter wise Solutions<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-9-science-forces-and-laws-of-motion-part-1\/#NCERT_Solutions_for_Class_9_Science_Forces_and_Laws_of_Motion_part_1\" >NCERT Solutions for Class 9 Science Forces and Laws of Motion part 1<\/a><ul class='ez-toc-list-level-6' ><li class='ez-toc-heading-level-6'><ul class='ez-toc-list-level-6' ><li class='ez-toc-heading-level-6'><ul class='ez-toc-list-level-6' ><li class='ez-toc-heading-level-6'><ul class='ez-toc-list-level-6' ><li class='ez-toc-heading-level-6'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-9-science-forces-and-laws-of-motion-part-1\/#1_Which_of_the_following_has_more_inertia\" >1. Which of the following has more inertia:<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-6'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-9-science-forces-and-laws-of-motion-part-1\/#2_In_the_following_example_try_to_identify_the_number_of_times_the_velocity_of_the_ball_changes\" >2. In the following example, try to identify the number of times the velocity of the ball changes:<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-6'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-9-science-forces-and-laws-of-motion-part-1\/#3_Explain_why_some_of_the_leaves_may_get_detached_from_a_tree_if_we_vigorously_shake_its_branch\" >3. Explain why some of the leaves may get detached from a tree if we vigorously shake its branch.<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-6'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-9-science-forces-and-laws-of-motion-part-1\/#4_Why_do_you_fall_in_the_forward_direction_when_a_moving_bus_brakes_to_a_stop_and_fall_backwards_when_it_accelerates_from_rest\" >4. Why do you fall in the forward direction when a moving bus brakes to a stop and fall backwards when it accelerates from rest?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-6'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-9-science-forces-and-laws-of-motion-part-1\/#1_If_action_is_always_equal_to_the_reaction_explain_how_a_horse_can_pull_a_cart\" >1. If action is always equal to the reaction, explain how a horse can pull a cart.<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-6'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-9-science-forces-and-laws-of-motion-part-1\/#2_Explain_why_is_it_difficult_for_a_fireman_to_hold_a_hose_which_ejects_large_amounts_of_water_at_a_high_velocity\" >2. Explain, why is it difficult for a fireman to hold a hose, which ejects large amounts of water at a high velocity.<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-6'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-9-science-forces-and-laws-of-motion-part-1\/#3_From_a_rifle_of_mass_4_kg_a_bullet_of_mass_50_g_is_fired_with_an_initial_velocity_of_Calculate_the_initial_recoil_velocity_of_the_rifle\" >3. From a rifle of mass 4 kg, a bullet of mass 50 g is fired with an initial velocity of. Calculate the initial recoil velocity of the rifle.<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-6'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-9-science-forces-and-laws-of-motion-part-1\/#4_Two_objects_of_masses_100_g_and_200_g_are_moving_along_the_same_line_and_direction_with_velocities_of_and_respectively_They_collide_and_after_the_collision_the_first_object_moves_at_a_velocity_of_Determine_the_velocity_of_the_second_object\" >4. Two objects of masses 100 g and 200 g are moving along the same line and direction with velocities of and, respectively. They collide and after the collision, the first object moves at a velocity of . Determine the velocity of the second object.<\/a><\/li><\/ul><\/li><\/ul><\/li><\/ul><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-9-science-forces-and-laws-of-motion-part-1\/#NCERT_Solutions_for_Class_9_Science\" >NCERT Solutions for Class 9 Science<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-9-science-forces-and-laws-of-motion-part-1\/#CBSE_app_for_Class_9\" >CBSE app for Class 9<\/a><\/li><\/ul><\/nav><\/div>\n<p>NCERT Solutions for Class 9 Science Forces and Laws of Motion part 1 Class 9 Science book solutions are available in PDF format for free download. These ncert book chapter wise questions and answers are very helpful for CBSE exam. CBSE recommends NCERT books and most of the questions in CBSE exam are asked from NCERT text books. Class 9 Science chapter wise NCERT solution for Science Book for all the chapters can be downloaded from our website and myCBSEguide mobile app for free.<\/p>\n<p style=\"text-align: center;\"><strong>NCERT solutions for Science\u00a0Forces and Laws of Motion <a class=\"button\" href=\"https:\/\/mycbseguide.com\/downloads\/cbse-class-09-science\/1218\/ncert-solutions\/5\/\">Download as PDF<\/a><\/strong><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter\" src=\"https:\/\/media-mycbseguide.s3.ap-south-1.amazonaws.com\/images\/blog\/09_Science_Book.jpg\" alt=\"NCERT Solutions for Class 9 Science Forces and Laws of Motion part 1\" width=\"156\" height=\"210\" \/><\/p>\n<h2><span class=\"ez-toc-section\" id=\"NCERT_Class_9_Science_Chapter_wise_Solutions\"><\/span><span class=\"underline-text\">NCERT Class 9 Science Chapter wise Solutions<\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<ul>\n<li>01 \u2013 \u00a0Matter in Our Surroundings<\/li>\n<li>02 \u2013 Is Mattter Around us Pure<\/li>\n<li>03 \u2013 Atoms and Molecules<\/li>\n<li>04 \u2013 Structure of the Atom<\/li>\n<li>05 \u2013 The Fundamental Unit of Life<\/li>\n<li>06 \u2013 Tissues<\/li>\n<li>07 \u2013 Diversity in Living Organisms<\/li>\n<li>08 \u2013 Motion<\/li>\n<li>09 \u2013 Force and Laws of Motion<\/li>\n<li>10 \u2013 Gravitation<\/li>\n<li>11 \u2013 Word and Energy<\/li>\n<li>12 \u2013 Sound<\/li>\n<li>13 \u2013 Why Do We Fall Ill<\/li>\n<li>14 \u2013 Natural Resources<\/li>\n<li>15 \u2013 Improvement in Food Resources<\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"NCERT_Solutions_for_Class_9_Science_Forces_and_Laws_of_Motion_part_1\"><\/span>NCERT Solutions for Class 9 Science Forces and Laws of Motion part 1<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h6 style=\"text-align: justify;\"><span class=\"ez-toc-section\" id=\"1_Which_of_the_following_has_more_inertia\"><\/span><strong>1. Which of the following has more inertia: <\/strong><span class=\"ez-toc-section-end\"><\/span><\/h6>\n<p style=\"text-align: justify;\"><strong>(a) a rubber ball and a stone of the same size? <\/strong><\/p>\n<p style=\"text-align: justify;\"><strong>(b) a bicycle and a train? <\/strong><\/p>\n<p style=\"text-align: justify;\"><strong>(c) a five rupees coin and a one-rupee coin?<\/strong><\/p>\n<p style=\"text-align: justify;\"><strong>Ans. (a)<\/strong> a stone of the same size will have more inertia than a rubber ball.<\/p>\n<p style=\"text-align: justify;\"><strong>(b)<\/strong> A train will have more inertia than a bicycle.<\/p>\n<p style=\"text-align: justify;\"><strong>(c)<\/strong> A five rupees coin will have more inertia than a one-rupee coin.<\/p>\n<hr \/>\n<p style=\"text-align: center;\">NCERT Solutions for Class 9 Science Forces and Laws of Motion part 1<\/p>\n<h6 style=\"text-align: justify;\"><span class=\"ez-toc-section\" id=\"2_In_the_following_example_try_to_identify_the_number_of_times_the_velocity_of_the_ball_changes\"><\/span><strong>2. In the following example, try to identify the number of times the velocity of the ball changes:<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h6>\n<p style=\"text-align: justify;\"><strong>\u201cA football player kicks a football to another player of his team who kicks the football towards the goal. The goalkeeper of the opposite team collects the football and kicks it towards a player of his own team\u201d.<\/strong><\/p>\n<p style=\"text-align: justify;\"><strong>Also identify the agent supplying the force in each case.<\/strong><\/p>\n<p style=\"text-align: justify;\"><strong>Ans. <\/strong>In the given example the velocity of football changes four times. As described below:<\/p>\n<p style=\"text-align: justify;\"><strong>(i)<\/strong> when the football player is supplying the force when he kicks the football to another player.<\/p>\n<p style=\"text-align: justify;\"><strong>(ii)<\/strong> when the other player kicks football towards the goal.<\/p>\n<p style=\"text-align: justify;\"><strong>(iii)<\/strong> When the goalkeeper of other team stops the ball.<\/p>\n<p style=\"text-align: justify;\"><strong>(iv)<\/strong> When the goalkeeper kicks the football towards player of his team.<\/p>\n<hr \/>\n<h6 style=\"text-align: justify;\"><span class=\"ez-toc-section\" id=\"3_Explain_why_some_of_the_leaves_may_get_detached_from_a_tree_if_we_vigorously_shake_its_branch\"><\/span><strong>3. Explain why some of the leaves may get detached from a tree if we vigorously shake its branch.<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h6>\n<p style=\"text-align: justify;\"><strong>Ans. <\/strong>Some of the leaves may get detached from a tree if we vigorously shake its branch because the some of the leaves due to property of inertia remain at rest while we vigorously shake branch of the tree as a result those leaves detach and fall off.<\/p>\n<hr \/>\n<h6 style=\"text-align: justify;\"><span class=\"ez-toc-section\" id=\"4_Why_do_you_fall_in_the_forward_direction_when_a_moving_bus_brakes_to_a_stop_and_fall_backwards_when_it_accelerates_from_rest\"><\/span><strong>4. Why do you fall in the forward direction when a moving bus brakes to a stop and fall backwards when it accelerates from rest?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h6>\n<p style=\"text-align: justify;\"><strong>Ans. <\/strong>when a moving bus brakes to a stop we fall in the forward direction because we are also moving with the speed of bus due to the inertia of motion and when suddenly it puts brakes i.e. comes to rest the lower half of our body also comes to rest but the upper half of our body not being in close contact with bus is still in the phase of motion so we fall in the forward direction.<\/p>\n<p style=\"text-align: justify;\">When the bus accelerates from rest, we are also at rest being on the resting seat as the engine applies force in forward direction we fall backwards due to the inertia now.<\/p>\n<hr \/>\n<p style=\"text-align: center;\">NCERT Solutions for Class 9 Science Forces and Laws of Motion part 1<\/p>\n<h6 style=\"text-align: justify;\"><span class=\"ez-toc-section\" id=\"1_If_action_is_always_equal_to_the_reaction_explain_how_a_horse_can_pull_a_cart\"><\/span><strong>1. If action is always equal to the reaction, explain how a horse can pull a cart.<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h6>\n<p style=\"text-align: justify;\"><strong>Ans. <\/strong>With a balance force the overall impact is absence of movement but with unbalanced forces, the resultant or the bigger force causes the motion. Same is true in the case where a horse pulls a cart. Horse exerts more force on the cart than the cart exerts to resist its movement hence this is an unbalanced force and the cart moves in the direction of horse\u2019s pull.<\/p>\n<hr \/>\n<p style=\"text-align: center;\">NCERT Solutions for Class 9 Science Forces and Laws of Motion part 1C<\/p>\n<h6 style=\"text-align: justify;\"><span class=\"ez-toc-section\" id=\"2_Explain_why_is_it_difficult_for_a_fireman_to_hold_a_hose_which_ejects_large_amounts_of_water_at_a_high_velocity\"><\/span><strong>2. Explain, why is it difficult for a fireman to hold a hose, which ejects large amounts of water at a high velocity.<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h6>\n<p style=\"text-align: justify;\"><strong>Ans. <\/strong>It is difficult for a fireman to hold a hose, which ejects large amounts of water at a high velocity because of the third law of newton when the hose ejects large amounts of water at a high velocity in forward direction the water coming out pushes the hose pipe in backward direction and it becomes difficult to hold it.<\/p>\n<hr \/>\n<p style=\"text-align: center;\">NCERT Solutions for Class 9 Science Forces and Laws of Motion part 1<\/p>\n<h6><span class=\"ez-toc-section\" id=\"3_From_a_rifle_of_mass_4_kg_a_bullet_of_mass_50_g_is_fired_with_an_initial_velocity_of_Calculate_the_initial_recoil_velocity_of_the_rifle\"><\/span><strong>3. From a rifle of mass 4 kg, a bullet of mass 50 g is fired with an initial velocity of<img decoding=\"async\" style=\"height: 22px; width: 56px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/09\/science\/ch09\/image001.png\" \/>. Calculate the initial recoil velocity of the rifle.<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h6>\n<p style=\"text-align: justify;\"><strong>Ans. <\/strong>Initial Momentum of rifle and bullet (before fire)<\/p>\n<p style=\"text-align: justify;\">= mv<\/p>\n<p style=\"text-align: justify;\"><img decoding=\"async\" style=\"height: 26px; width: 148px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/09\/science\/ch09\/image002.png\" \/><\/p>\n<p style=\"text-align: justify;\">= 0<\/p>\n<p style=\"text-align: justify;\">Final Momentum of rifle and bullet (after fire)<\/p>\n<p style=\"text-align: justify;\"><img decoding=\"async\" style=\"height: 24px; width: 95px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/09\/science\/ch09\/image003.png\" \/><\/p>\n<p style=\"text-align: justify;\"><img decoding=\"async\" style=\"height: 19px; width: 115px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/09\/science\/ch09\/image004.png\" \/> where (50 g = 0.05 kg)<\/p>\n<p style=\"text-align: justify;\"><img decoding=\"async\" style=\"height: 26px; width: 115px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/09\/science\/ch09\/image005.png\" \/>= &#8211; 0.44 m\/s<\/p>\n<hr \/>\n<p style=\"text-align: center;\">NCERT Solutions for Class 9 Science Forces and Laws of Motion part 1<\/p>\n<h6 style=\"text-align: justify;\"><span class=\"ez-toc-section\" id=\"4_Two_objects_of_masses_100_g_and_200_g_are_moving_along_the_same_line_and_direction_with_velocities_of_and_respectively_They_collide_and_after_the_collision_the_first_object_moves_at_a_velocity_of_Determine_the_velocity_of_the_second_object\"><\/span><strong>4. Two objects of masses 100 g and 200 g are moving along the same line and direction with velocities of <img decoding=\"async\" style=\"height: 22px; width: 48px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/09\/science\/ch09\/image006.png\" \/>and<img decoding=\"async\" style=\"height: 22px; width: 47px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/09\/science\/ch09\/image007.png\" \/>, respectively. They collide and after the collision, the first object moves at a velocity of <img decoding=\"async\" style=\"height: 22px; width: 72px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/09\/science\/ch09\/image008.png\" \/>. Determine the velocity of the second object.<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h6>\n<p style=\"text-align: justify;\"><strong>Ans. <\/strong>Given,<\/p>\n<p style=\"text-align: justify;\"><img decoding=\"async\" style=\"height: 24px; width: 20px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/09\/science\/ch09\/image009.png\" \/>= 100g = 0.1 kg<\/p>\n<p style=\"text-align: justify;\"><img decoding=\"async\" style=\"height: 24px; width: 22px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/09\/science\/ch09\/image010.png\" \/>= 200g = 0.2 kg<\/p>\n<p style=\"text-align: justify;\">velocity of the first object = <img decoding=\"async\" style=\"height: 24px; width: 14px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/09\/science\/ch09\/image011.png\" \/>= 2 m\/s<\/p>\n<p style=\"text-align: justify;\">velocity of the second object = <img decoding=\"async\" style=\"height: 24px; width: 16px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/09\/science\/ch09\/image012.png\" \/>= 1 m\/s<\/p>\n<p style=\"text-align: justify;\">Momentum before the collision = <img decoding=\"async\" style=\"height: 24px; width: 79px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/09\/science\/ch09\/image013.png\" \/><\/p>\n<p style=\"text-align: justify;\"><img decoding=\"async\" style=\"height: 19px; width: 108px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/09\/science\/ch09\/image014.png\" \/><\/p>\n<p style=\"text-align: justify;\">= 0.4 kg m\/s<\/p>\n<p style=\"text-align: justify;\">since velocity of first object after collision = 1.67m\/s<\/p>\n<p style=\"text-align: justify;\">If we suppose that velocity of second object = v<\/p>\n<p style=\"text-align: justify;\">As per law of conservation of momentum,<\/p>\n<p style=\"text-align: justify;\"><img decoding=\"async\" style=\"height: 24px; width: 82px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/09\/science\/ch09\/image015.png\" \/>= <img decoding=\"async\" style=\"height: 24px; width: 82px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/09\/science\/ch09\/image015.png\" \/>(initial momentum = final momentum)<\/p>\n<p style=\"text-align: justify;\"><img decoding=\"async\" style=\"height: 19px; width: 152px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/09\/science\/ch09\/image016.png\" \/><\/p>\n<p style=\"text-align: justify;\">0.4 = 0.167 + 0.2v<\/p>\n<p style=\"text-align: justify;\">0.2v = 0.4 -0.167<\/p>\n<p style=\"text-align: justify;\">v = 0.2333\/0.2 = 2.33\/2 = 1.16 m\/s<\/p>\n<h2><span class=\"ez-toc-section\" id=\"NCERT_Solutions_for_Class_9_Science\"><\/span>NCERT Solutions for Class 9 Science<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>NCERT Solutions Class 9 Science PDF (Download) Free from myCBSEguide app and myCBSEguide website. Ncert solution class 9 Science includes text book solutions .NCERT Solutions for CBSE Class 9 Science have total 15 chapters. 9 Science NCERT Solutions in PDF for free Download on our website. Ncert Science class 9 solutions PDF and Science ncert class 9 PDF solutions with latest modifications and as per the latest CBSE syllabus are only available in myCBSEguide.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"CBSE_app_for_Class_9\"><\/span>CBSE app for Class 9<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>To download\u00a0NCERT Solutions for class 9 Science, Computer Science, Home Science,Hindi ,English, Maths Social Science do check myCBSEguide app or website. myCBSEguide provides sample papers with solution, test papers for chapter-wise practice, NCERT solutions, NCERT Exemplar solutions, quick revision notes for ready reference, CBSE guess papers and CBSE important question papers. Sample Paper all are made available through\u00a0<a href=\"https:\/\/play.google.com\/store\/apps\/details?id=in.techchefs.MyCBSEGuide&amp;referrer=utm_source%3Dmycbse_bottom%26utm_medium%3Dtext%26utm_campaign%3Dmycbseads\"><strong>the best app for CBSE students<\/strong><\/a>\u00a0and myCBSEguide website.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>NCERT Solutions for Class 9 Science Forces and Laws of Motion part 1 Class 9 Science book solutions are available in PDF format for free download. These ncert book chapter wise questions and answers are very helpful for CBSE exam. CBSE recommends NCERT books and most of the questions in CBSE exam are asked from &#8230; <a title=\"NCERT Solutions for Class 9 Science Forces and Laws of Motion part 1\" class=\"read-more\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-9-science-forces-and-laws-of-motion-part-1\/\" aria-label=\"More on NCERT Solutions for Class 9 Science Forces and Laws of Motion part 1\">Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":-1,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[281,1383],"tags":[283,1344,216,349],"class_list":["post-4140","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ncert-solutions","category-science-cbse-class-08","tag-cbse-study-material","tag-class-9","tag-ncert-solutions","tag-science"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.0 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>NCERT Solutions for Class 9 Science Forces and Laws of Motion part 1<\/title>\n<meta name=\"description\" content=\"NCERT Solutions for Class 9 Science Forces and Laws of Motion part 1 in PDF format for free download. 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