A 25 g bullet with a muzzle velocity of 300 m/s is fired into a board 4.0 cm thick. For a soft board, the bullet goes through the board and emerges with a speed of 50 m/s. What was the average force exerted on the bullet by the board?
Answer= 27344 N
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Wouldn't we have to know the momentum change of the board? Surely it moved initially gaining some momentum from the bullet.
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