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Question 30511
JEE Physics · Medium

Center of Mass, Momentum and Collision: COM Motion MCQ

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COM MotionMediumQuestion 30511

Question

The centre of mass of an isolated system (no external forces) moves with:
  1. A
    Zero velocity always
  2. B
    Constant velocity (including rest)
    Correct
  3. C
    Increasing speed
  4. D
    Constant acceleration

Correct answer

Constant velocity (including rest)

Explanation

With no external force, the COM moves at constant velocity (which may be zero if the system was at rest).

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