Please help me!

Directions: Consider a 2-kg bowling ball sits on top of a building that is 40 meters tall. It falls to the ground. Think about the amounts of potential and kinetic energy the bowling ball has:
· as it sits on top of a building that is 40 meters tall.
· as it is half way through a fall off a building that is 40 meters tall and travelling 19.8 meters per second.
· as it is just about to hit the ground from a fall off a building that is 40 meters tall and travelling 28 meters per second.

Questions
(Score for Question 1: ___ of 7 points)
1. Does the bowling ball have more potential energy or kinetic energy as it sit on top of the building? Why?

(Score for Question 2: ___ of 7 points)
2. Does the bowling ball have more potential energy or kinetic energy as it is half way through its fall? Why?

(Score for Question 3: ___ of 7 points)
3. Does the bowling ball have more potential energy or kinetic energy just before it hits the ground? Why?

(Score for Question 4: ___ of 4 points)
4. What is the potential energy of the bowling ball as it sits on top of the building?

(Score for Question 5: ___ of 4 points)
5. What is the potential energy of the ball as it is half way through the fall, 20 meters high?

(Score for Question 6: ___ of 3 points)
6. What is the kinetic energy of the ball as it is half way through the fall?

(Score for Question 7: ___ of 3 points)
7. What is the kinetic energy of the ball just before it hits the ground?