Posted by **Anup** on Sunday, March 13, 2011 at 12:17pm.

A 13 g bullet traveling 235 m/s penetrates a 2.0 kg block of wood and emerges going 171 m/s. If the block is stationary on a frictionless surface when hit, how fast does it move after the bullet emerges?

in m/s

- physics -
**jimmy**, Sunday, March 13, 2011 at 2:27pm
m1v1=m1v1prime+m2v2prime

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