{"id":189791,"date":"2025-02-10T08:51:01","date_gmt":"2025-02-10T08:51:01","guid":{"rendered":"https:\/\/learnexams.com\/blog\/?p=189791"},"modified":"2025-02-10T08:51:03","modified_gmt":"2025-02-10T08:51:03","slug":"usain-bolt-has-achieved-a-top-speed-of-27-3-miles-per-hour-or-12-2-meters-per-second","status":"publish","type":"post","link":"https:\/\/www.learnexams.com\/blog\/2025\/02\/10\/usain-bolt-has-achieved-a-top-speed-of-27-3-miles-per-hour-or-12-2-meters-per-second\/","title":{"rendered":"Usain Bolt has achieved a top speed of 27.3 miles per hour, or 12.2 meters per second"},"content":{"rendered":"\n<p>Usain Bolt has achieved a top speed of 27.3 miles per hour, or 12.2 meters per second. Supposed he reached this top speed at 6 seconds into his race (finished in ). What was his acceleration at 6 seconds?<br>Use this equation:<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" src=\"https:\/\/learnexams.com\/blog\/wp-content\/uploads\/2025\/02\/image-238.png\" alt=\"\" class=\"wp-image-189792\"\/><\/figure>\n\n\n\n<p><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-ast-global-color-6-color\"><strong>The Correct Answer and Explanation is :<\/strong><\/mark><\/p>\n\n\n\n<p>To find Usain Bolt&#8217;s acceleration at 6 seconds, we can use the following kinematic equation:<\/p>\n\n\n\n<p>[<br>v = u + at<br>]<\/p>\n\n\n\n<p>Where:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>( v ) is the final velocity at time ( t ),<\/li>\n\n\n\n<li>( u ) is the initial velocity (which we assume is 0 m\/s at the start of the race),<\/li>\n\n\n\n<li>( a ) is the acceleration, and<\/li>\n\n\n\n<li>( t ) is the time taken.<\/li>\n<\/ul>\n\n\n\n<p>We are given:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>( v = 12.2 \\, \\text{m\/s} ) (his top speed),<\/li>\n\n\n\n<li>( u = 0 \\, \\text{m\/s} ) (assuming he started from rest),<\/li>\n\n\n\n<li>( t = 6 \\, \\text{seconds} ) (the time at which he reached his top speed).<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Step 1: Plug in the values into the equation<\/h3>\n\n\n\n<p>We want to find ( a ) (acceleration). Rearranging the equation to solve for ( a ):<\/p>\n\n\n\n<p>[<br>a = \\frac{v &#8211; u}{t}<br>]<\/p>\n\n\n\n<p>Substitute the known values:<\/p>\n\n\n\n<p>[<br>a = \\frac{12.2 \\, \\text{m\/s} &#8211; 0 \\, \\text{m\/s}}{6 \\, \\text{seconds}}<br>]<\/p>\n\n\n\n<p>[<br>a = \\frac{12.2}{6} = 2.0333 \\, \\text{m\/s}^2<br>]<\/p>\n\n\n\n<p>Thus, Usain Bolt&#8217;s acceleration at 6 seconds is approximately <strong>2.03 m\/s\u00b2<\/strong>.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Explanation:<\/h3>\n\n\n\n<p>The formula used here comes from basic kinematics, where acceleration is defined as the rate of change of velocity. In the case of Usain Bolt&#8217;s race, we assume that he started from rest, which means his initial velocity ( u ) is 0. Since the top speed is reached at 6 seconds, the acceleration is simply the change in velocity divided by the time it took to reach that velocity.<\/p>\n\n\n\n<p>In simpler terms, this means that each second, Usain Bolt&#8217;s velocity was increasing by approximately 2.03 meters per second. This high acceleration explains how an elite sprinter can rapidly reach such high speeds, achieving remarkable times in short distances.<\/p>\n\n\n\n<p>This calculation assumes a uniform acceleration, which is a simplification, as his actual acceleration would likely have varied over the course of the race. Nonetheless, the calculated acceleration provides a good estimate for his speed at the 6-second mark of his race.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Usain Bolt has achieved a top speed of 27.3 miles per hour, or 12.2 meters per second. Supposed he reached this top speed at 6 seconds into his race (finished in ). What was his acceleration at 6 seconds?Use this equation: The Correct Answer and Explanation is : To find Usain Bolt&#8217;s acceleration at 6 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[25],"tags":[],"class_list":["post-189791","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/189791","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/comments?post=189791"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/189791\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=189791"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=189791"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=189791"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}