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Q. What happens to the velocity of a heavy body when it undergoes an elastic collision in one dimension with a very light body at rest?

  • (A) it stops and comes to rest
  • (B) it keeps on moving with the same velocity
  • (C) it starts moving with half of its initial velocity
  • (D) it rebounds with the same velocity
  • Correct Answer - Option(B)
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Explanation by: Admin
The heavy body keeps on moving with the same velocity when it undergoes an elastic collision in one dimension with a very light body at rest. Note: the body at rest starts moving with double the initial velocity of the heavy body.

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