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January 31, 2015

January 31, 2015

Posted by **tracey** on Wednesday, September 19, 2012 at 4:25pm.

- physical sciencei -
**maria**, Friday, September 21, 2012 at 3:07pmke=1/2 (mass)(velocity)

ke=1/2mv^2

ke= 1/2m(10^2-0^2) ke=1/2m(20^2-10^2)

ke=1/2m(100) ke=1/2m(400-100)

ratio is 300/100 or 3/1

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