A body of mass 3kg, moving with a speed of 4 ms-, collides head on with a stationary body of mass 2kg. Their relative velocity of separation after the collision is 2 ms-. Then (a) The coefficient of restitution is 0.5 (b) The impulse of the collision is 7.2 N-s (c) The loss of kinetic energy due to collision is 3.6J (d) The loss of kinetic energy due to collision is 7.2J