A 25 g bullet travelling 250 ms penetrates a 2 kg block of
A 25 g bullet travelling 250 m/s penetrates a 2 kg block of wood and emerges cleanly at 150 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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a 25 g bullet travelling 250 ms penetrates a 2 kg block of wood and emerges cleanly at 150 ms if the block is
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