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![[Post New]](/templates/default/images/icon_minipost_new.gif) 19 Nov 2007 08:26:12 IST
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Simple. Use KE = P2/2m
So first KE = 1002/2m
Then KE' = 2002/2m
KE'/KE = 4.
New KE is 4 times old KE. So KE increases 3 times
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Will nip in at times to solve problems :)
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this reply: 5 points
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