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Two particles which are initially at rest, move towards each other under the action of their internal attraction. If their speeds are v and 2v at any instant, then the speed of centre of mass of the system will be:
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- 2v
- zero
- 1.5
- v
Correct Option: B
If no external force actson a system of particles, the centre of mass remains at rest. So, speed of centre of mass is zero.
