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May 24, 2015

Homework Help: Physics

Posted by Linda on Wednesday, November 10, 2010 at 1:48pm.

A 23 g bullet traveling 220 m/s penetrates a 4.2 kg block of wood and emerges cleanly at 140 m/s.

If the block is stationary on a frictionless surface when hit, how fast does it move after the bullet emerges?

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