JEE Physics · Medium

Center of Mass, Momentum and Collision: Elastic — Equal Mass Exchange MCQ

Solve this quality-checked JEE multiple-choice question, then review the correct answer and explanation.

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Elastic — Equal Mass ExchangeMediumQuestion 30530

Question

Newton's cradle works on the principle that in elastic collisions between equal masses in a line:
  1. A
    All masses move
  2. B
    Only momentum is transferred to the end ball
  3. C
    The end ball moves with speed equal to the original ball
    Correct
  4. D
    Energy is lost at each bounce

Correct answer

The end ball moves with speed equal to the original ball

Explanation

In Newton's cradle, elastic collisions between equal masses transfer velocity completely from one end to the other. The end ball receives the entire velocity of the striking ball.