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September 20, 2014

Homework Help: physics

Posted by corey on Thursday, March 1, 2012 at 11:56pm.

A 65.0-kg runner has a speed of 5.20 m/s at one instant during a long-distance event. (a) what is the runner's kinetic energy at this instant? (b) if he doubles his speed to reach the finish line, by what factor does his kinetic energy change

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