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# A 13 g bullet traveling 219 m/s penetrates a 2.0 kg block of wood and emerges cleanly at 158 m/s.

A 13 g bullet traveling 219 m/s penetrates a 2.0 kg block of wood and emerges cleanly at 158 m/s. If the block is stationary on a frictionless surface when hit, how fast does it move after the bullet emerges?