In a game of pool, a cue ball with an initial velocity of 1.50 m/s directed to the right (along the +x-axis) collides with the five ball, which has equal mass and is initially at rest. The five ball then moves at 1.30 m/s at an angle of 30.0° above the +x direction.
(a) Find the cue ball's final velocity.
magnitude:
direction:
(b) Is kinetic energy conserved?