Two particles A&B initially at rest move towards each other under a mutual force of attraction. At the instant when the velocity of a is very & that of B is 2v ,the velocity of centre of mass of the system.

Two particles A&B initially at rest move towards each other under a mu

1.	Two particles A&B initially at rest move towards each other under a mutual force of attraction. At the instant when the velocity of a is very & that of B is 2v ,the velocity of centre of mass of the system.
Answer» Zero. The speed of the centre of mass of the system is zero because the particles are initially at REST. As there are no external forces on the system, the centre of mass will CONTINUE to be at rest even though the particles are moving under the ACTION of their internal attraction.

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Two particles A&B initially at rest move towards each other under a mutual force of attraction. At the instant when the velocity of a is very & that of B is 2v ,the velocity of centre of mass of the system.

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