Comments on: Suppose an automobile has a kinetic energy of 2600 J. When it moves with nine times the speed, what will be it? http://www.cargearusa.com/blog/suppose-an-automobile-has-a-kinetic-energy-of-2600-j-when-it-moves-with-nine-times-the-speed-what-will-be-it/ Fri, 10 Feb 2012 01:44:42 +0000 http://wordpress.org/?v=2.7 hourly 1 By: prussellro http://www.cargearusa.com/blog/suppose-an-automobile-has-a-kinetic-energy-of-2600-j-when-it-moves-with-nine-times-the-speed-what-will-be-it/comment-page-1/#comment-8998 prussellro Sun, 07 Mar 2010 01:11:36 +0000 http://www.cargearusa.com/blog/suppose-an-automobile-has-a-kinetic-energy-of-2600-j-when-it-moves-with-nine-times-the-speed-what-will-be-it/#comment-8998 Be careful, Muhammad: 1/81 = 2600/e2<a href="http://www.cargearusa.com/srch/srch.php?q=%22KIA+Spectra%22"> prussellro</a> Be careful, Muhammad:
1/81 = 2600/e2 prussellro

]]> By: Muhammad Saad H http://www.cargearusa.com/blog/suppose-an-automobile-has-a-kinetic-energy-of-2600-j-when-it-moves-with-nine-times-the-speed-what-will-be-it/comment-page-1/#comment-8997 Muhammad Saad H Sat, 06 Mar 2010 19:02:35 +0000 http://www.cargearusa.com/blog/suppose-an-automobile-has-a-kinetic-energy-of-2600-j-when-it-moves-with-nine-times-the-speed-what-will-be-it/#comment-8997 kinetic energy is 1/2mv^2 KE=.5mv^2 Solve this way(e1=energy 1) (v1)^2/(v2)^2=e1/e2 (v1)^2/(v2)^2=2600/e2 (v1)^2/(9v1)^2=2600/e2 (As second velocity is 9 times the first one,second vel =9v1) Now (v1)^2 will get cancelled 1/9=2600/e2 cross multiply and solve Remember that the method is convention to solve such problems.<a href="http://www.qualitylawnmower.com/blog/"> Muhammad Saad H</a> kinetic energy is 1/2mv^2
KE=.5mv^2

Solve this way(e1=energy 1)
(v1)^2/(v2)^2=e1/e2
(v1)^2/(v2)^2=2600/e2
(v1)^2/(9v1)^2=2600/e2 (As second velocity is 9 times the first one,second vel =9v1)
Now (v1)^2 will get cancelled
1/9=2600/e2
cross multiply and solve
Remember that the method is convention to solve such problems. Muhammad Saad H

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