The 30-lb package A has a speed of 5 ft/s when it enters the smooth ramp. As it slides dow...

The 30-lb package A has a speed of 5 ft/s when it enters the smooth ramp. As it slides down the ramp, it strikes the 80-lb package B which is initially at rest. If the coefficient of restitution between A and B is e = 0.6, determine the velocity of B just after the impact.