The figure gives an overhead view of the path taken by a 0.167 kg cue ball as it bounces from a rail of a pool table. The ball's initial speed is \( 2.32 \mathrm{~m} / \mathrm{s} \), and the angle \( \theta_{1} \) is \( 55.0^{\circ} \). The bounce reverses the \( y \) component of the ball's velocity but does not alter the \( x \) component. What are (a) angle \( \theta_{2} \) and (b) the magnitude of the change in the ball's linear momentum? (The fact that the ball rolls is irrelevant to the problem.)