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Center of Mass and Collision question

2013 · Q144
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Center of Mass and Collision question

2013 · Q144

NEETPhysicsCenter of Mass and CollisionMCQ+4 / −1
An explosion breaks a rock into three parts in a horizontal plane. Two of them go off at right angles to each other. The first part of mass 1 kg moves with a speed of 12 m s−-−1 and the second part of mass 2 kg moves with 8 m s−-−1 speed. If the third part files off with 4 m s−-−1 speed, then its mass is :
  1. A
    7 kg
  2. B
    17 kg
  3. C
    3 kg
  4. D
    5 kg
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