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Center of Mass and Collision question

2023 · Q157
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Center of Mass and Collision question

2023 · Q157

NEETPhysicsCenter of Mass and CollisionMCQ+4 / −1

Two particles A and B initially at rest, move towards each other under mutual force of attraction. At an instance when the speed of A is v and speed of B is 3v, the speed of centre of mass is :

  1. A
    2v
  2. B
    zero
  3. C
    v
  4. D
    4v
View written solutionFree

Correct answer: B

Final velocity of centre of mass = Initial velocity of centre of mass = 0 because net external force on system is zero.

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