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QUESTION
a 15 gram bullet traveling 250 m/s penetrates a 2.1 kilogram block of wood and emerges going 180 m/s.
a 15 gram bullet traveling 250 m/s penetrates a 2.1 kilogram block of wood and emerges going 180 m/s. if the block is stationary on a frictionless surface when hit, how fast does it move after the bullet emerges?
