A Ball Player Wishes to Determine Pitching Speed by Throwing

Multiple Choice

A ball player wishes to determine pitching speed by throwing a ball horizontally from an elevation of 5 m above the ground. The player sees the ball land 20 m down range. What is the player's
Pitching speed?

A) about 25 m/s
B) about 20 m/s
C) about 5 m/s
D) about 10 m/s
E) none of these