A tennis ball is shot vertically upward from the surface of an atmosphere-free planet with an initial speed of 20.0 m/s. One second later, the ball has an instantaneous velocity in the upward direction of 15.0 m/s.
A) How long does it take the ball to reach its maximum height?
B) How high does the ball rise?
C) What is the magnitude of the acceleration due to gravity on the surface of this planet?
D) Determine the velocity of the ball when it returns to its original position. Note: assume the upward direction is positive.
E) How long has the ball been in the air when it returns to its original position?