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Two objects of masses and possess velocities and , respectively. The velocity of their centre of mass in is,
(a)
(b)
(c)
(d)

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Important Questions on Centre of Mass, Momentum and Collisions
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Two bodies of different masses and are moving with velocities and towards each other due to mutual gravitational attraction. Then the velocity of the centre of mass is

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Two spheres of masses and are initially at rest at a distance apart. Due to mutual force of attraction, they approach each other. When they are at separation the acceleration of the centre of mass of spheres would be

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Two bodies and have masses and respectively where and they are at a distance apart. Equal force is applied to them so that they approach each other. The position where they hit each other is _____.

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Two particles having mass ratio are interconnected by a light inextensible string that passes over a smooth pulley. If the system is released, then the acceleration of the centre of mass of the system is
