{"id":3705,"date":"2023-01-09T10:18:36","date_gmt":"2023-01-09T10:18:36","guid":{"rendered":"https:\/\/9thclass.deltapublications.in\/?page_id=3705"},"modified":"2025-08-12T07:06:04","modified_gmt":"2025-08-12T07:06:04","slug":"s-9-e-third-law-of-motion","status":"publish","type":"page","link":"https:\/\/9thclass.deltapublications.in\/index.php\/s-9-e-third-law-of-motion\/","title":{"rendered":"S-9.e Third Law Of Motion"},"content":{"rendered":"\n<h2 class=\"wp-block-heading has-text-align-center has-text-color\" style=\"color:#00056d;text-transform:uppercase\"><strong>Third Law Of Motion<\/strong><\/h2>\n\n\n<div class=\"wp-block-image is-resized\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"225\" height=\"300\" src=\"https:\/\/9thclass.deltapublications.in\/wp-content\/uploads\/2023\/09\/image-31.png\" alt=\"\" class=\"wp-image-10233\"\/><\/figure><\/div>\n\n\n<p class=\"has-text-color has-huge-font-size\" style=\"color:#74008b\"><strong>Key Notes:<\/strong><\/p>\n\n\n\n<h3 class=\"wp-block-heading has-text-color has-link-color has-large-font-size wp-elements-ed65d8813f66543140fce9fe48126391\" style=\"color:#000060\"><strong>Newton&#8217;s Third Law of Motion<\/strong><\/h3>\n\n\n\n<p class=\"has-text-color has-link-color has-large-font-size wp-elements-5ab7ebf5784f2987195ca161357bd0df\" style=\"color:#000060\"><strong>Definition<\/strong>: <\/p>\n\n\n\n<p class=\"has-large-font-size\">Newton&#8217;s Third Law of Motion states that for every action, there is an equal and opposite reaction. This means that forces always come in pairs.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"579\" src=\"https:\/\/9thclass.deltapublications.in\/wp-content\/uploads\/2025\/08\/Untitled-design-2025-08-12T122316.962-1024x579.png\" alt=\"\" class=\"wp-image-17354\" style=\"width:470px;height:auto\" srcset=\"https:\/\/9thclass.deltapublications.in\/wp-content\/uploads\/2025\/08\/Untitled-design-2025-08-12T122316.962-1024x579.png 1024w, https:\/\/9thclass.deltapublications.in\/wp-content\/uploads\/2025\/08\/Untitled-design-2025-08-12T122316.962-300x170.png 300w, https:\/\/9thclass.deltapublications.in\/wp-content\/uploads\/2025\/08\/Untitled-design-2025-08-12T122316.962-768x434.png 768w, https:\/\/9thclass.deltapublications.in\/wp-content\/uploads\/2025\/08\/Untitled-design-2025-08-12T122316.962.png 1472w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure><\/div>\n\n\n<p class=\"has-text-color has-link-color has-large-font-size wp-elements-dc98abd5dd8a8876f91ab4d7ac28b4f4\" style=\"color:#000060\"><strong>Action-Reaction Pairs<\/strong>: <\/p>\n\n\n\n<p class=\"has-large-font-size\">Whenever one object exerts a force on a second object, the second object exerts a force of equal magnitude but in the opposite direction on the first object. These forces are called action and reaction forces.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"579\" src=\"https:\/\/9thclass.deltapublications.in\/wp-content\/uploads\/2025\/08\/Untitled-design-2025-08-12T122444.234-1024x579.png\" alt=\"\" class=\"wp-image-17356\" style=\"width:481px;height:auto\" srcset=\"https:\/\/9thclass.deltapublications.in\/wp-content\/uploads\/2025\/08\/Untitled-design-2025-08-12T122444.234-1024x579.png 1024w, https:\/\/9thclass.deltapublications.in\/wp-content\/uploads\/2025\/08\/Untitled-design-2025-08-12T122444.234-300x170.png 300w, https:\/\/9thclass.deltapublications.in\/wp-content\/uploads\/2025\/08\/Untitled-design-2025-08-12T122444.234-768x434.png 768w, https:\/\/9thclass.deltapublications.in\/wp-content\/uploads\/2025\/08\/Untitled-design-2025-08-12T122444.234.png 1472w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure><\/div>\n\n\n<p class=\"has-text-color has-link-color has-large-font-size wp-elements-e0c64f8488444ec67833b9fca9273c42\" style=\"color:#000060\"><strong>Examples<\/strong>:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li class=\"has-large-font-size\"><strong>Walking<\/strong>: When you walk, your foot pushes backward against the ground (action), and the ground pushes your foot forward with an equal and opposite force (reaction).<\/li>\n<\/ul>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"579\" src=\"https:\/\/9thclass.deltapublications.in\/wp-content\/uploads\/2025\/08\/Untitled-design-2025-08-12T122735.589-1024x579.png\" alt=\"\" class=\"wp-image-17357\" style=\"width:429px;height:auto\" srcset=\"https:\/\/9thclass.deltapublications.in\/wp-content\/uploads\/2025\/08\/Untitled-design-2025-08-12T122735.589-1024x579.png 1024w, https:\/\/9thclass.deltapublications.in\/wp-content\/uploads\/2025\/08\/Untitled-design-2025-08-12T122735.589-300x170.png 300w, https:\/\/9thclass.deltapublications.in\/wp-content\/uploads\/2025\/08\/Untitled-design-2025-08-12T122735.589-768x434.png 768w, https:\/\/9thclass.deltapublications.in\/wp-content\/uploads\/2025\/08\/Untitled-design-2025-08-12T122735.589.png 1472w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure><\/div>\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li><strong>Rocket Propulsion<\/strong>: In a rocket, the engines expel gas backward (action), and the reaction force propels the rocket forward.<\/li>\n<\/ul>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"579\" src=\"https:\/\/9thclass.deltapublications.in\/wp-content\/uploads\/2025\/08\/Untitled-design-2025-08-12T122928.543-1024x579.png\" alt=\"\" class=\"wp-image-17358\" style=\"width:474px;height:auto\" srcset=\"https:\/\/9thclass.deltapublications.in\/wp-content\/uploads\/2025\/08\/Untitled-design-2025-08-12T122928.543-1024x579.png 1024w, https:\/\/9thclass.deltapublications.in\/wp-content\/uploads\/2025\/08\/Untitled-design-2025-08-12T122928.543-300x170.png 300w, https:\/\/9thclass.deltapublications.in\/wp-content\/uploads\/2025\/08\/Untitled-design-2025-08-12T122928.543-768x434.png 768w, https:\/\/9thclass.deltapublications.in\/wp-content\/uploads\/2025\/08\/Untitled-design-2025-08-12T122928.543.png 1472w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure><\/div>\n\n\n<p class=\"has-text-color has-link-color has-large-font-size wp-elements-b401a8d48369d35db15a453a9c8b1d8d\" style=\"color:#000060\"><strong>Forces Are Equal in Magnitude<\/strong>: <\/p>\n\n\n\n<p class=\"has-large-font-size\">The forces in action-reaction pairs are always equal in strength. However, they act on different objects, so they do not cancel each other out.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"579\" src=\"https:\/\/9thclass.deltapublications.in\/wp-content\/uploads\/2025\/08\/Untitled-design-2025-08-12T123048.304-1024x579.png\" alt=\"\" class=\"wp-image-17359\" style=\"width:449px;height:auto\" srcset=\"https:\/\/9thclass.deltapublications.in\/wp-content\/uploads\/2025\/08\/Untitled-design-2025-08-12T123048.304-1024x579.png 1024w, https:\/\/9thclass.deltapublications.in\/wp-content\/uploads\/2025\/08\/Untitled-design-2025-08-12T123048.304-300x170.png 300w, https:\/\/9thclass.deltapublications.in\/wp-content\/uploads\/2025\/08\/Untitled-design-2025-08-12T123048.304-768x434.png 768w, https:\/\/9thclass.deltapublications.in\/wp-content\/uploads\/2025\/08\/Untitled-design-2025-08-12T123048.304.png 1472w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure><\/div>\n\n\n<p class=\"has-text-color has-link-color has-large-font-size wp-elements-1350cf45364a6542471c27d8f4381c9b\" style=\"color:#000060\"><strong>Forces Are Opposite in Direction<\/strong>: <\/p>\n\n\n\n<p class=\"has-large-font-size\">The direction of the force exerted by the first object is opposite to the direction of the force exerted by the second object.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"579\" src=\"https:\/\/9thclass.deltapublications.in\/wp-content\/uploads\/2025\/08\/Untitled-design-2025-08-12T123423.363-1024x579.png\" alt=\"\" class=\"wp-image-17360\" style=\"width:519px;height:auto\" srcset=\"https:\/\/9thclass.deltapublications.in\/wp-content\/uploads\/2025\/08\/Untitled-design-2025-08-12T123423.363-1024x579.png 1024w, https:\/\/9thclass.deltapublications.in\/wp-content\/uploads\/2025\/08\/Untitled-design-2025-08-12T123423.363-300x170.png 300w, https:\/\/9thclass.deltapublications.in\/wp-content\/uploads\/2025\/08\/Untitled-design-2025-08-12T123423.363-768x434.png 768w, https:\/\/9thclass.deltapublications.in\/wp-content\/uploads\/2025\/08\/Untitled-design-2025-08-12T123423.363.png 1472w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure><\/div>\n\n\n<p class=\"has-text-color has-link-color has-large-font-size wp-elements-3b72da1d5c95bf6d79bff2e850b272d8\" style=\"color:#000060\"><strong>Impact on Motion<\/strong>: <\/p>\n\n\n\n<p class=\"has-large-font-size\">The action and reaction forces do not cancel out because they act on different objects. Therefore, they affect the motion of each object involved.<\/p>\n\n\n\n<p class=\"has-text-color has-link-color has-large-font-size wp-elements-1263eb211906417065f947a86d0da395\" style=\"color:#000060\"><strong>Interaction with Objects<\/strong>: <\/p>\n\n\n\n<p class=\"has-large-font-size\">This law explains how objects interact with each other. For example, when you push against a wall, the wall pushes back with an equal force.<\/p>\n\n\n\n<p class=\"has-text-color has-link-color has-large-font-size wp-elements-a43482068a4fc2274651e0f13aa04438\" style=\"color:#000060\"><strong>Misconceptions<\/strong>: <\/p>\n\n\n\n<p class=\"has-large-font-size\">It&#8217;s important to note that while the forces are equal and opposite, the resulting motion of the objects may not be the same due to differences in mass and other factors.<\/p>\n\n\n\n<p class=\"has-text-color has-large-font-size\" style=\"color:#d90000\">Let&#8217;s practice!<\/p>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/wordwall.net\/play\/76657\/358\/649\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"500\" src=\"https:\/\/9thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-2-41.png\" alt=\"\" class=\"wp-image-6462\" srcset=\"https:\/\/9thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-2-41.png 500w, https:\/\/9thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-2-41-300x300.png 300w, https:\/\/9thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-2-41-150x150.png 150w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/a><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/wordwall.net\/play\/77033\/658\/732\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"500\" src=\"https:\/\/9thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-1-1-43.png\" alt=\"\" class=\"wp-image-6463\" srcset=\"https:\/\/9thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-1-1-43.png 500w, https:\/\/9thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-1-1-43-300x300.png 300w, https:\/\/9thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-1-1-43-150x150.png 150w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/a><\/figure>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Third Law Of Motion Key Notes: Newton&#8217;s Third Law of Motion Definition: Newton&#8217;s Third Law of Motion states that for every action, there is an equal and opposite reaction. This means that forces always come in pairs. Action-Reaction Pairs: Whenever one object exerts a force on a second object, the second object exerts a force<a class=\"more-link\" href=\"https:\/\/9thclass.deltapublications.in\/index.php\/s-9-e-third-law-of-motion\/\">Continue reading <span class=\"screen-reader-text\">&#8220;S-9.e Third Law Of Motion&#8221;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"class_list":["post-3705","page","type-page","status-publish","hentry","entry"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/9thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/pages\/3705","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/9thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/9thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/9thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/9thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/comments?post=3705"}],"version-history":[{"count":19,"href":"https:\/\/9thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/pages\/3705\/revisions"}],"predecessor-version":[{"id":17362,"href":"https:\/\/9thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/pages\/3705\/revisions\/17362"}],"wp:attachment":[{"href":"https:\/\/9thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/media?parent=3705"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}