1. A ball is thrown upward from a height of 15 m with a velocity of 20 m/sec. Acceleration due to gravity is 9.8 m/s a. Find the relation between height h and time t after the ball is released.
b. How high is the ball after 3 seconds?
c. When will the ball hit the ground?

2.Repeat problem 1, only answer the questions as if the ball were on the moon. Acceleration due to gravity on the moon is 1.6 m/s2.

3. A ball is kicked upward from a height of 1 m with a velocity of 25 m/sec. Acceleration due to gravity is 9.8 m/s2.
a. Find the relation between height h and time t after the ball is released.
b. How high is the ball after 2 seconds?
c. When will the ball hit the ground?
d. What is the maximum height of the ball?