posted by Anonymous .
A tallest vocano in the Solar System is the 24 km tall Martian volcano, Olympus Mons. Assume an astronaut drops a ball off the rim of the crater and that the free fall acceleration remains constant throughout the ball's 24 km fall at a value of 3.7m/s^2. Find (a) the time for the ball to reach the crater floor and (b) the velocity with which it hits.
Any assistance is great.