Two identical balls A and B of mass m are suspended from cords of length L/2 and L, resp...

Two identical balls A and B of mass m are suspended from cords of length L/2 and L, respectively. Ball A is released from rest when ∅ = 90° and swings down to ∅ = 0°, where it strikes B. Determine the speed of each ball just after impact and the maximum angle θ through which B will swing. The coefficient of restitution between the balls is e.