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Center of Mass and Collision question

2013 · Q147
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Center of Mass and Collision question

2013 · Q147

NEETPhysicsCenter of Mass and CollisionMCQ+4 / −1
A person holding a rifle (mass of person and rifle together is 100 kg) stands on a smooth surface and fires 10 shots horizontally, in 5 s. Each bullet has a mass of 10 g with a muzzle velocity of 800 m s−-−1. The final velocity acquired by the person and the average force exerted on the person are :
  1. A
    −-−0.08 ms−-−1, 16 N
  2. B
    −-−0.8 ms−-−1, 8 N
  3. C
    −-−1.6 ms−-−1, 16 N
  4. D
    −-−1.6 ms−-−1, 8 N
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