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April 19, 2014

Homework Help: physics

Posted by Rebecca on Tuesday, November 15, 2011 at 11:26pm.

A 25 g bullet traveling at 280 m/s passes completely through a wooden block, initially at rest on a smooth table. The block has a mass of 1000 g. The bullet emerges traveling in the same direction, but at 50 m/s. What percentage of total kinetic energy is lost in the process?

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