A tennis ball on Mars, where the acceleration due to gravity is 0.379g and air resistance is negligible, is hit directly upward and returns to the same level 8.5 s later.

(a) How high above its original point did the ball go?

(b) How fast was it moving just after it was hit?

(c) Sketch graphs of the ball’s vertical position, vertical velocity, and vertical acceleration as functions of time while it’s in the Martian air.