{"id":7903,"date":"2020-10-13T15:10:34","date_gmt":"2020-10-13T09:40:34","guid":{"rendered":"http:\/\/astan.lk\/al_virtualclassroom\/?p=7903"},"modified":"2020-10-13T15:10:24","modified_gmt":"2020-10-13T09:40:24","slug":"impulse","status":"publish","type":"post","link":"https:\/\/astan.lk\/al_virtualclassroom\/impulse\/","title":{"rendered":"Impulse,Linear momentum"},"content":{"rendered":"

Linear momentum<\/span><\/strong><\/p>\n

Linear momentum is a vector quantity defined as the product of an object’s mass \u00a0m and its velocity v. Linear momentum is denoted by the letter p .<\/p>\n

Note that a body’s momentum is always in the same direction as its velocity vector. The units of momentum are kg m\/s.<\/p>\n

p=mv<\/strong><\/h3>\n

Law of conservation of linear momentum\u00a0<\/strong><\/p>\n

The total linear momentum of a system of interacting bodies on which no external forces are acting \u00a0 \u00a0 \u00a0 \u00a0remains constant.<\/p>\n

Collisions<\/span><\/strong><\/p>\n

Let a constant force (f) act in the same direction in which the particle is moving . Initial and final velocities are u and v,time taken – t. \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\"im\"<\/a>\u00a0Ft is an important quantity in dynamics.It has been named as impulse.<\/p>\n

A large force(F) \u00a0acting in a very small time interval(t) \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0Then \u00a0 \u00a0 \u00a0Impulse I = F\u00d7t<\/strong><\/h4>\n

Impulse is a vector quantity.Direction of impulse is the direction of force.<\/p>\n

I=Ft=\u0394(mv) \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 Unit – \u00a0kgms-1<\/sup><\/h4>\n

Applications<\/b><\/p>\n

(i) A cricket player lowers has hands while catching the ball : by doing so the time of impact increases and hence the effect of force decreases.<\/p>\n

(ii) When a person falls from a certain height on floor, he receives more injuries as compared to falling on a heap of sand. It is because the Cemented floor does not yield whereas the sand yield there by increasing the time of impact hence decreasing the impact of force.<\/p>\n

(iii) The shock absorbers provided in the vehicle helps to travel smoothly on an uneven road. It is because the shockers increases the time of impulse which reduces the force.<\/p>\n

 <\/p>\n

\"ft\"<\/a>\u00a0In a force – time graph area between the graph and the time axis gives the impulse.<\/p>\n

Area=F\u00d7t=impulse<\/strong><\/p>\n

 <\/p>\n

 <\/p>\n

\n

Force due to water flow<\/strong><\/span><\/p>\n

\"fdw\"<\/a><\/p>\n

Conveyor belt<\/span><\/strong><\/p>\n

\"cb\"<\/a><\/p>\n

Force on helicopter blades<\/strong><\/span><\/p>\n

\"h\"<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

Linear momentum Linear momentum is a vector quantity defined as the product of an object’s mass \u00a0m and its velocity v. Linear momentum is denoted by the letter p . Note that a body’s momentum is always in the same direction as its velocity vector. The units of momentum are kg m\/s. p=mv Law of […]<\/p>\n","protected":false},"author":842,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[16,1948],"tags":[],"class_list":["post-7903","post","type-post","status-publish","format-standard","hentry","category-physics","category-unit-02-en"],"acf":[],"yoast_head":"\nImpulse,Linear momentum - Learning & Education Portal<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/astan.lk\/al_virtualclassroom\/impulse\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Impulse,Linear momentum - Learning & Education Portal\" \/>\n<meta property=\"og:description\" content=\"Linear momentum Linear momentum is a vector quantity defined as the product of an object’s mass \u00a0m and its velocity v. Linear momentum is denoted by the letter p . Note that a body’s momentum is always in the same direction as its velocity vector. The units of momentum are kg m\/s. p=mv Law of […]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/astan.lk\/al_virtualclassroom\/impulse\/\" \/>\n<meta property=\"og:site_name\" content=\"Learning & Education Portal\" \/>\n<meta property=\"article:published_time\" content=\"2020-10-13T09:40:34+00:00\" \/>\n<meta property=\"og:image\" content=\"http:\/\/astan.lk\/al_virtualclassroom\/wp-content\/uploads\/2017\/02\/im.png\" \/>\n<meta name=\"author\" content=\"Admin\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Admin\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/astan.lk\/al_virtualclassroom\/impulse\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/astan.lk\/al_virtualclassroom\/impulse\/\"},\"author\":{\"name\":\"Admin\",\"@id\":\"https:\/\/astan.lk\/al_virtualclassroom\/#\/schema\/person\/ffb0504e2cfb71518790b2fffd668c59\"},\"headline\":\"Impulse,Linear momentum\",\"datePublished\":\"2020-10-13T09:40:34+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/astan.lk\/al_virtualclassroom\/impulse\/\"},\"wordCount\":302,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\/\/astan.lk\/al_virtualclassroom\/#organization\"},\"image\":{\"@id\":\"https:\/\/astan.lk\/al_virtualclassroom\/impulse\/#primaryimage\"},\"thumbnailUrl\":\"http:\/\/astan.lk\/al_virtualclassroom\/wp-content\/uploads\/2017\/02\/im.png\",\"articleSection\":[\"Physics\",\"Unit 02\"],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\/\/astan.lk\/al_virtualclassroom\/impulse\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/astan.lk\/al_virtualclassroom\/impulse\/\",\"url\":\"https:\/\/astan.lk\/al_virtualclassroom\/impulse\/\",\"name\":\"Impulse,Linear momentum - Learning & Education Portal\",\"isPartOf\":{\"@id\":\"https:\/\/astan.lk\/al_virtualclassroom\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/astan.lk\/al_virtualclassroom\/impulse\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/astan.lk\/al_virtualclassroom\/impulse\/#primaryimage\"},\"thumbnailUrl\":\"http:\/\/astan.lk\/al_virtualclassroom\/wp-content\/uploads\/2017\/02\/im.png\",\"datePublished\":\"2020-10-13T09:40:34+00:00\",\"breadcrumb\":{\"@id\":\"https:\/\/astan.lk\/al_virtualclassroom\/impulse\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/astan.lk\/al_virtualclassroom\/impulse\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/astan.lk\/al_virtualclassroom\/impulse\/#primaryimage\",\"url\":\"http:\/\/astan.lk\/al_virtualclassroom\/wp-content\/uploads\/2017\/02\/im.png\",\"contentUrl\":\"http:\/\/astan.lk\/al_virtualclassroom\/wp-content\/uploads\/2017\/02\/im.png\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/astan.lk\/al_virtualclassroom\/impulse\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/astan.lk\/al_virtualclassroom\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Impulse,Linear momentum\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/astan.lk\/al_virtualclassroom\/#website\",\"url\":\"https:\/\/astan.lk\/al_virtualclassroom\/\",\"name\":\"Learning & Education Portal\",\"description\":\"Astan\",\"publisher\":{\"@id\":\"https:\/\/astan.lk\/al_virtualclassroom\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/astan.lk\/al_virtualclassroom\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Organization\",\"@id\":\"https:\/\/astan.lk\/al_virtualclassroom\/#organization\",\"name\":\"Learning & Education Portal\",\"url\":\"https:\/\/astan.lk\/al_virtualclassroom\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/astan.lk\/al_virtualclassroom\/#\/schema\/logo\/image\/\",\"url\":\"https:\/\/astan.lk\/al_virtualclassroom\/wp-content\/uploads\/2016\/11\/logo.png\",\"contentUrl\":\"https:\/\/astan.lk\/al_virtualclassroom\/wp-content\/uploads\/2016\/11\/logo.png\",\"width\":340,\"height\":51,\"caption\":\"Learning & Education Portal\"},\"image\":{\"@id\":\"https:\/\/astan.lk\/al_virtualclassroom\/#\/schema\/logo\/image\/\"}},{\"@type\":\"Person\",\"@id\":\"https:\/\/astan.lk\/al_virtualclassroom\/#\/schema\/person\/ffb0504e2cfb71518790b2fffd668c59\",\"name\":\"Admin\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/astan.lk\/al_virtualclassroom\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/secure.gravatar.com\/avatar\/f76e3d5e4e7064c8c128567b8ab726a35a2d3ac22ff5a60d673f87b8d4ee7333?s=96&d=mm&r=g\",\"contentUrl\":\"https:\/\/secure.gravatar.com\/avatar\/f76e3d5e4e7064c8c128567b8ab726a35a2d3ac22ff5a60d673f87b8d4ee7333?s=96&d=mm&r=g\",\"caption\":\"Admin\"},\"sameAs\":[\"http:\/\/lk.preceptor1\"],\"url\":\"https:\/\/astan.lk\/al_virtualclassroom\/author\/astan-preceptor1\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Impulse,Linear momentum - Learning & Education Portal","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/astan.lk\/al_virtualclassroom\/impulse\/","og_locale":"en_US","og_type":"article","og_title":"Impulse,Linear momentum - Learning & Education Portal","og_description":"Linear momentum Linear momentum is a vector quantity defined as the product of an object’s mass \u00a0m and its velocity v. Linear momentum is denoted by the letter p . Note that a body’s momentum is always in the same direction as its velocity vector. The units of momentum are kg m\/s. p=mv Law of […]","og_url":"https:\/\/astan.lk\/al_virtualclassroom\/impulse\/","og_site_name":"Learning & Education Portal","article_published_time":"2020-10-13T09:40:34+00:00","og_image":[{"url":"http:\/\/astan.lk\/al_virtualclassroom\/wp-content\/uploads\/2017\/02\/im.png","type":"","width":"","height":""}],"author":"Admin","twitter_card":"summary_large_image","twitter_misc":{"Written by":"Admin","Est. reading time":"1 minute"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/astan.lk\/al_virtualclassroom\/impulse\/#article","isPartOf":{"@id":"https:\/\/astan.lk\/al_virtualclassroom\/impulse\/"},"author":{"name":"Admin","@id":"https:\/\/astan.lk\/al_virtualclassroom\/#\/schema\/person\/ffb0504e2cfb71518790b2fffd668c59"},"headline":"Impulse,Linear momentum","datePublished":"2020-10-13T09:40:34+00:00","mainEntityOfPage":{"@id":"https:\/\/astan.lk\/al_virtualclassroom\/impulse\/"},"wordCount":302,"commentCount":0,"publisher":{"@id":"https:\/\/astan.lk\/al_virtualclassroom\/#organization"},"image":{"@id":"https:\/\/astan.lk\/al_virtualclassroom\/impulse\/#primaryimage"},"thumbnailUrl":"http:\/\/astan.lk\/al_virtualclassroom\/wp-content\/uploads\/2017\/02\/im.png","articleSection":["Physics","Unit 02"],"inLanguage":"en-US","potentialAction":[{"@type":"CommentAction","name":"Comment","target":["https:\/\/astan.lk\/al_virtualclassroom\/impulse\/#respond"]}]},{"@type":"WebPage","@id":"https:\/\/astan.lk\/al_virtualclassroom\/impulse\/","url":"https:\/\/astan.lk\/al_virtualclassroom\/impulse\/","name":"Impulse,Linear momentum - Learning & Education Portal","isPartOf":{"@id":"https:\/\/astan.lk\/al_virtualclassroom\/#website"},"primaryImageOfPage":{"@id":"https:\/\/astan.lk\/al_virtualclassroom\/impulse\/#primaryimage"},"image":{"@id":"https:\/\/astan.lk\/al_virtualclassroom\/impulse\/#primaryimage"},"thumbnailUrl":"http:\/\/astan.lk\/al_virtualclassroom\/wp-content\/uploads\/2017\/02\/im.png","datePublished":"2020-10-13T09:40:34+00:00","breadcrumb":{"@id":"https:\/\/astan.lk\/al_virtualclassroom\/impulse\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/astan.lk\/al_virtualclassroom\/impulse\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/astan.lk\/al_virtualclassroom\/impulse\/#primaryimage","url":"http:\/\/astan.lk\/al_virtualclassroom\/wp-content\/uploads\/2017\/02\/im.png","contentUrl":"http:\/\/astan.lk\/al_virtualclassroom\/wp-content\/uploads\/2017\/02\/im.png"},{"@type":"BreadcrumbList","@id":"https:\/\/astan.lk\/al_virtualclassroom\/impulse\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/astan.lk\/al_virtualclassroom\/"},{"@type":"ListItem","position":2,"name":"Impulse,Linear momentum"}]},{"@type":"WebSite","@id":"https:\/\/astan.lk\/al_virtualclassroom\/#website","url":"https:\/\/astan.lk\/al_virtualclassroom\/","name":"Learning & Education Portal","description":"Astan","publisher":{"@id":"https:\/\/astan.lk\/al_virtualclassroom\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/astan.lk\/al_virtualclassroom\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Organization","@id":"https:\/\/astan.lk\/al_virtualclassroom\/#organization","name":"Learning & Education Portal","url":"https:\/\/astan.lk\/al_virtualclassroom\/","logo":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/astan.lk\/al_virtualclassroom\/#\/schema\/logo\/image\/","url":"https:\/\/astan.lk\/al_virtualclassroom\/wp-content\/uploads\/2016\/11\/logo.png","contentUrl":"https:\/\/astan.lk\/al_virtualclassroom\/wp-content\/uploads\/2016\/11\/logo.png","width":340,"height":51,"caption":"Learning & Education Portal"},"image":{"@id":"https:\/\/astan.lk\/al_virtualclassroom\/#\/schema\/logo\/image\/"}},{"@type":"Person","@id":"https:\/\/astan.lk\/al_virtualclassroom\/#\/schema\/person\/ffb0504e2cfb71518790b2fffd668c59","name":"Admin","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/astan.lk\/al_virtualclassroom\/#\/schema\/person\/image\/","url":"https:\/\/secure.gravatar.com\/avatar\/f76e3d5e4e7064c8c128567b8ab726a35a2d3ac22ff5a60d673f87b8d4ee7333?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/f76e3d5e4e7064c8c128567b8ab726a35a2d3ac22ff5a60d673f87b8d4ee7333?s=96&d=mm&r=g","caption":"Admin"},"sameAs":["http:\/\/lk.preceptor1"],"url":"https:\/\/astan.lk\/al_virtualclassroom\/author\/astan-preceptor1\/"}]}},"_links":{"self":[{"href":"https:\/\/astan.lk\/al_virtualclassroom\/wp-json\/wp\/v2\/posts\/7903","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/astan.lk\/al_virtualclassroom\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/astan.lk\/al_virtualclassroom\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/astan.lk\/al_virtualclassroom\/wp-json\/wp\/v2\/users\/842"}],"replies":[{"embeddable":true,"href":"https:\/\/astan.lk\/al_virtualclassroom\/wp-json\/wp\/v2\/comments?post=7903"}],"version-history":[{"count":4,"href":"https:\/\/astan.lk\/al_virtualclassroom\/wp-json\/wp\/v2\/posts\/7903\/revisions"}],"predecessor-version":[{"id":7955,"href":"https:\/\/astan.lk\/al_virtualclassroom\/wp-json\/wp\/v2\/posts\/7903\/revisions\/7955"}],"wp:attachment":[{"href":"https:\/\/astan.lk\/al_virtualclassroom\/wp-json\/wp\/v2\/media?parent=7903"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/astan.lk\/al_virtualclassroom\/wp-json\/wp\/v2\/categories?post=7903"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/astan.lk\/al_virtualclassroom\/wp-json\/wp\/v2\/tags?post=7903"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}