In a game of pool, the cue ball strikes another ball of the same mass and initially at rest. After the collision, the cue ball moves at 3.00 m/s along a line making an angle of -18° (i.e. below the x-axis) with the cue ball's original direction of motion (the x-axis), and the second ball has a speed of 1.614 m/s. Find the angle between the direction of motion of the second ball and the original direction of motion of the cue ball. Find the origional speed of the cue ball.