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July 6, 2015

Homework Help: Physics

Posted by Taylor on Sunday, November 14, 2010 at 9:43pm.

A boy pushes his friend across a skating rink. Since the frictional forces are very small, the force exerted by the boy on his friend's back is the only significant forece acting on the friend in the horizontal direction. Is the change in kinetic energy of the friend greater than, equal to, or less than the work done by the force exerted by the boy?

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