A body of mass 20 kg is moving with a velocity of 2v and another body of mass 10 kg is moving with velocity V along same direction. The velocity of their centre of mass is

A body of mass 1 kg moving with velocity 5 m/s collides with another body of mass 2 kg moving with velocity 1.5 m/s in opposite direction. If the coefficient of restitution is 0.8, their velocities aftter collision respectively are

A body of mass 1 kg moving with velocity 5 m/s collides with another body of mass 2 kg moving with velocity 1.5 m/s in opposite direction. If the coefficient of restitution is 0.8, their velocities aftter collision respectively are

A body of mass 2 kg moving with a velocity 3 m//s collides with a body of mass 1 kg moving with a velocity of 4 m//s in opposite direction. If the collision is head on and completely inelastic, then

A body of mass 2 kg moving with a velocity 3 m//s collides with a body of mass 1 kg moving with a velocity of 4 m//s in opposite direction. If the collision is head on and completely inelastic, then

Two bodies of masses 2 kg and 4 kg are moving with velocities 2 m/s and 10 m/s respectively along same direction. Then the velocity of their centre of mass will be

A body of mass 2 kg moving with a velocity 3 m//sec collides with a body of mass 1 kg moving with a velocity of 4 m//sec in opposite direction. If the collision is head-on perfect inelastic, then

A body of mass 2 kg moving with a velocity of 3 m/sec collides head on with a body of mass 1 kg moving in opposite direction with a velocity of 4 m/sec. After collision, two bodies stick together and move with a common velocity which in m/sec is equal to

A body of mass 2 kg moving with a velocity of 3 m/sec collides head on with a body of mass 1 kg moving in opposite direction with a velocity of 4 m/sec. After collision, two bodies stick together and move with a common velocity which in m/sec is equal to