JEE Physics · Hard

Center of Mass, Momentum and Collision: Velocity of COM Frame MCQ

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

Timer-based practiceDetailed answer reviewMobile-friendly flow
Velocity of COM FrameHardQuestion 30551

Question

In the centre of mass frame of reference:
  1. A
    All particles are at rest
  2. B
    Total momentum is zero
    Correct
  3. C
    Total KE is zero
  4. D
    Total force is zero

Correct answer

Total momentum is zero

Explanation

The COM frame is defined as the reference frame where the total momentum of the system is zero.