Question: 3 . A 5 . 2 0 g bullet moving at 6 7 2 m / s strikes a 0 . 7 0 0 kg

3. A 5.20 g bullet moving at 672 m/s strikes a 0.700 kg block at rest on a frictionless surface. a) If the bullet stays in the block, what is the final speed of the combination?
b) If the bullet emerges from the block moving at 428m/s, what is the final speed of the block?

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