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MHT CET202121 Sep 2021Evening ShiftPhysicsCenter of Mass, Momentum and CollisionActual

A molecule of mass ' m ' moving with velocity ' v ' makes 5 elastic collisions with a wall of container per second. The change in momentum of the wall per second in 5 collisions will be

Options

  1. A10 mv
  2. B5 mv
  3. C1 5 mv
  4. D1 10 mv

Correct answer

A. 10 mv

Step-by-step solution

Change in momentum in each collision is [ mv -(- mv )]=2 mv Hence change in momentum in 5 collisions is 5 2 mv =10 mv

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