A hollow smooth uniform `A` of mass 'm' rolls without sliding on a smooth horizontal surface collides head to elastically with another stationary smooth solid sphere `B` of the same mass `m` and same radius. The ratio of kinetic energy of 'B' to that of 'A' just after the collision is -
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A uniform solid sphere A of mass m is rolling without sliding on a a smooth horizontal surface. It collides elastically and head - on with another stationary hollow sphere B of the same mass and radius. Assuming friction to be absent everywhere, the ratio of the kinetic energy of B to that of A just after the collision is

A uniform solid sphere A of mass m is rolling without sliding on a a smooth horizontal surface. It collides elastically and head - on with another stationary hollow sphere B of the same mass and radius. Assuming friction to be absent everywhere, the ratio of the kinetic energy of B to that of A just after the collision is

A loop of mass M,and radius R is rolling on a smooth horizontal surface with speed 'v'. Its total kinetic energy is

A loop of mass M and radius R is rolling on a smooth horizontal surface with speed 'v'. It's total kinetic energy is

A loop of mass M and Radius R is rolling on a smooth horizontal surface with speed 'V'. Its total kinetic energy

A particle of mass m and momentum p moves on a smooth horizontal table and collides directly and elastically with a similar particle (of mass m) having momentum -2p . The loss (-) or gain (+) in the kinetic energy of the first particle in the collision is

A particle of mass m and momentum p moves on a smooth horizontal table and collides directly and elastically with a similar particle (of mass m) having momentum -2p . The loss (-) or gain (+) in the kinetic energy of the first particle in the collision is