Q. The tallest volcano in the solar system is the 22km tall Martian volcano, Olympus Mons. An astronaut drops a ball off the rim of the crater and that the free fall acceleration of the ball remains constant throughout the ball's 22km fall at a value of 3.6 m/s2. (We assume that the crater is as deep as the volcano is tall, which is not usually case in nature.)
Find out the time for the ball to reach crater floor.