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Two particles A and B, initially at rest, move towards each other under mutual force of attraction. At the instant when the speed of A is v and the speed of B is 2v, what is the speed of mass of the system?
  • a)
    3v
  • b)
    v
  • c)
    Zero
  • d)
    1.5v
Correct answer is option 'C'. Can you explain this answer?
Most Upvoted Answer
Two particles A and B, initially at rest, move towards each other unde...
No external force is acting on the centre of mass. It remains at rest. The speed of centre of mass is zero.
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