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A ball of mass 3M rolls from rest on a s...

A ball of mass 3M rolls from rest on a smooth flat table towards another ball of mass 2M at rest with a constant velocity `5m//s`. When the two balls are separated by a distance `6m`, the position of centre of mass from the mass `3M` is

A

`3m`

B

`2.4m`

C

`2.0m`

D

`1m`

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The correct Answer is:
B
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