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in Physics by (46.9k points)
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A 10g bullet travelling at 200 m/s strikes and remains embedded in a 2kg target which is originally at rest but free to move. At what speed does the target move off?

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by (47.6k points)
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Best answer

Mass of bullet, 

m1 = 10g = 0.01 kg

 Velocity of bullet, v1 = 200 m/s 

Mass of block with an embedded bullet, m2 = 2 + 0.01 = 2.01kg 

Recoil velocity, v2 = ? 

m1v1 = m2v2 

v2 = 0.99 m/s

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