A 60 lb sphere A of radius 5.0 inches is moving with a velocity of 5 ft/s to the right along a flat, frictionless surface. It strikes directly a 7.5 lb sphere of radius 2.5 inches which is initially at rest. If the coefficient of elasticity, e, is 1.0, perfectly elastic, and all spherical surfaces are frictionless, find the velocity of each sphere immediately after impact?