Block B of mass 2 kg is attached to an unstretched spring of stiffness k = 10 kN/m and is at rest on a horizontal frictionless surface. Block A of mass 4 kg moves at a velocity of uA = 10 m/s and strikes block B. If the coefficient of restitution between the two blocks is e = 0.8, determine
(a) the velocity of block A after colliding with block B
(b) the maximum deflection of the spring,
(c) the energy loss due to the initial impact between the two blocks.