Question

Been stuck on this for a while! please help :)

Answer 1

Short answer: 1.99 m

Step-by-step explanation:

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

Thus,
`h=(39)/(2.0*9.8)` 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.