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April 20, 2014

Homework Help: physics

Posted by anton on Sunday, February 21, 2010 at 2:46am.

4.80-kg watermelon is dropped (zero initial speed) from the roof of a 25.0-m-tall building. a) Calculate the work done by gravity on the watermelon during its displacement from the roof to the ground. b) What is the kinetic energy of the watermelon just before it strikes the ground? You can ignore air resistance.

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