Been stuck on this for a while! : )

Short answer: 1.99 m

Explanation:

PE=m*g*h ---> if we divide each side by m*g then we get as we simplify the right side with m*g we get the final height formula as .

Thus, which results in h=1.9898 - if you need more than two decimals. Rounded up is approximately 2 meters.

The complete answer to your question is:

A 2.0-kilogram ball held above the floor has 39 joules of potential energy. The ball's height is about 2 meters above the floor.

this is a good question! i'll do some research and come back when i have the answer!