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April 17, 2014

Homework Help: physics

Posted by brooke on Monday, June 18, 2012 at 8:03pm.

An 85 kg football player traveling 4.7 m/s is stopped in 1.0 s by a tackler. What is the original kinetic energy of the player? (I tried using 1/2 m v^2 but that doesn't seem to be right. How do I manipulate the formula?) What average power is required to stop him?

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