Advanced physics

The tallest volcano in the solar system the 34 km 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 34 km fall at a value of 3.6 m/s". 12 ( We assume that the crater is as deep as the volcano is tall which is not usually the case in nature.) Find the time for the ball to reach the crater floor. Answer in units of s