Problem 2 (25 pts)
Two smooth balls, each of mass m, have the velocities shown just
before they collide. If the velocity of A after impact is in the direction
shown, determine
(a) the post-impact speed of A, $v_A^+$, as a function of $v_0$
(b) the post-impact velocity of B, $\vec{v_B}^+$, as a function of $v_0$ and using
the given component system
(c) the coefficient of restitution e for the impact
Use $\sin 60^\circ = \cos 30^\circ = \frac{\sqrt{3}}{2}$ and $\sin 30^\circ = \cos 60^\circ = \frac{1}{2}$.