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July 30, 2015

Homework Help: Physics

Posted by TRACY on Sunday, February 26, 2012 at 9:07pm.

A 7 kilogram bowling ball is dropped from a fourth story window. If each story is 3 meters high, use energy conservation (not the equations of motion) to find the ball's velocity when it strikes the ground. Ignore air resistance.


1/2 m v^2= mgh
v= sqrt (2g*(3+.5))

V=sqrt(2)(9.8)(3)
v=sqrt58.8
v=7.67 m/s

did I do this right? thanks

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