Comments on: Suppose an automobile has 2100 J of kinetic energy. When it moves at three times the speed what will be its ki? http://www.cargearusa.com/blog/suppose-an-automobile-has-2100-j-of-kinetic-energy-when-it-moves-at-three-times-the-speed-what-will-be-its-ki/ Mon, 21 May 2012 16:47:33 +0000 http://wordpress.org/?v=2.7 hourly 1 By: be the change.* http://www.cargearusa.com/blog/suppose-an-automobile-has-2100-j-of-kinetic-energy-when-it-moves-at-three-times-the-speed-what-will-be-its-ki/comment-page-1/#comment-9270 be the change.* Thu, 25 Mar 2010 17:54:24 +0000 http://www.cargearusa.com/blog/suppose-an-automobile-has-2100-j-of-kinetic-energy-when-it-moves-at-three-times-the-speed-what-will-be-its-ki/#comment-9270 It would be 9x more, so 18,900J. Because Ek=1/2mv^2, so if velocity was 1 at first, then 3 after, it'd be a difference of 3^2=9.<a href="http://www.autostires.com/wiper-blades-303"> be the change.*</a> It would be 9x more, so 18,900J.

Because Ek=1/2mv^2, so if velocity was 1 at first, then 3 after, it’d be a difference of 3^2=9. be the change.*

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