You've been sent to a new planet. In order to determine the planet's free-fall acceleration, you throw a ball upwards with a speed of 16.0 m/s and discover that some time later the ball is moving downwards at 5.0 m/s when it is located 33.0 m above the release point.
(A) Find the acceleration on this planet. Give the answer as a magnitude and a direction (up or down).
(B) Find the maximum height that the ball reaches.
(C) At what time is the ball at its maximum height?