A ball of mass 2 kg hanging from a spring oscillates with a time period 2π seconds. Ball is removed when it is in equilibrium position, then spring shortens by
A body of mass 1 kg moving with velocity of 4 metre per second collides with a body of mass 0.5 kg moving with a velocity of 2m per second if the velocity of the first body after collision is 8/3 metre per second find the velocity of the second body after collision