{"id":8446,"date":"2019-05-22T16:07:47","date_gmt":"2019-05-22T16:07:47","guid":{"rendered":"http:\/\/www.lancaster.ac.uk\/fas\/psych\/glossary\/momentum\/"},"modified":"2019-05-22T16:07:47","modified_gmt":"2019-05-22T16:07:47","slug":"momentum","status":"publish","type":"post","link":"https:\/\/www.lancaster.ac.uk\/fas\/psych\/glossary\/momentum\/","title":{"rendered":"Momentum"},"content":{"rendered":"<p>It is sometimes referred to &#8216;mass in motion&#8217;: all objects have mass, thus if it is moving it has momentum. &nbsp;There are two types of momentum. &nbsp;One is linear momentum (<span class=\"\" style=\"font-style: italic;\">P<\/span>) of a moving rigid body, which is the product of its mass (<span class=\"\" style=\"font-style: italic;\">m<\/span>) and velocity (<span class=\"\" style=\"font-style: italic;\">v<\/span>). &nbsp;Thus, <span class=\"\" style=\"font-style: italic;\">P<\/span>=<span class=\"\" style=\"font-style: italic;\">mv<\/span>. &nbsp;This type is called upon by sports commentators to express a player&#8217;s power play (&#8220;his momentum carried him over the score line&#8221;), and it should be compared to the meaning of force. &nbsp;The other is angular momentum (<span class=\"\" style=\"font-style: italic;\">L<\/span>\u03c9) of a rigid body, and is is the product of the angular velocity (\u03c9) and its moment of inertia (I) about the axis of rotation. &nbsp;Thus, <span class=\"\" style=\"font-style: italic;\">L<\/span> = I<span class=\"\" style=\"font-style: italic;\">\u03c9<\/span>.&nbsp;<\/p>\n<\/p>\n<p>See <a href=\"force\">Force<\/a>, <a href=\"mass\">Mass<\/a>, <a href=\"moment_of_inertia_-i-\">Moment of inertia (I)<\/a>, <a href=\"velocity\">Velocity<\/a><\/p>\n<p><\/p>\n<p><\/p>\n<p><\/body><\/html><\/p>\n","protected":false},"excerpt":{"rendered":"<p>It is sometimes referred to &#8216;mass in motion&#8217;: all objects have mass, thus if it is moving it has momentum. &nbsp;There are two types of momentum. &nbsp;One is linear momentum (P) of a moving rigid body, which is the product of its mass (m) and velocity (v). &nbsp;Thus, P=mv. &nbsp;This type is called upon by &hellip; <\/p>\n<p class=\"link-more\"><a href=\"https:\/\/www.lancaster.ac.uk\/fas\/psych\/glossary\/momentum\/\" class=\"more-link\">Continue reading<span class=\"screen-reader-text\"> &#8220;Momentum&#8221;<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[2],"class_list":["post-8446","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-glossary","entry"],"_links":{"self":[{"href":"https:\/\/www.lancaster.ac.uk\/fas\/psych\/glossary\/wp-json\/wp\/v2\/posts\/8446","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.lancaster.ac.uk\/fas\/psych\/glossary\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.lancaster.ac.uk\/fas\/psych\/glossary\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.lancaster.ac.uk\/fas\/psych\/glossary\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.lancaster.ac.uk\/fas\/psych\/glossary\/wp-json\/wp\/v2\/comments?post=8446"}],"version-history":[{"count":0,"href":"https:\/\/www.lancaster.ac.uk\/fas\/psych\/glossary\/wp-json\/wp\/v2\/posts\/8446\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.lancaster.ac.uk\/fas\/psych\/glossary\/wp-json\/wp\/v2\/media?parent=8446"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.lancaster.ac.uk\/fas\/psych\/glossary\/wp-json\/wp\/v2\/categories?post=8446"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.lancaster.ac.uk\/fas\/psych\/glossary\/wp-json\/wp\/v2\/tags?post=8446"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}