Playing shortstop, you pick up a ground ball and throw it to second base. The ball is

Question:

Playing shortstop, you pick up a ground ball and throw it to second base. The ball is thrown horizontally, with a speed of 18 m/s, directly toward point A (FIGURE 4-19). When the ball reaches the second baseman 0.54 s later, it is caught at point B.
(a) How far were you from the second baseman?
(b) What is the distance of vertical drop, AB?