Answer:
22050 J
Explanation:
Given Mass of the ball, m = 4.5 Kg
Height, h =500 m
Acceleration due to gravity, 
To calculate the potential energy we use formula,

Substituting the given values, we get
PE = 4.5× 9.8×500
=22050 J
Answer:
Prob. D
Explanation:
I am also a Visual Learner.
I would say vibrations, but is there choices?
B, good luck, hope this helps :)