Question

A rock with a mass of 1.0 kg is at the top of a hill and has a potential energy of 50j.How high is the hill?

Answer 1

Given:

m (mass) = 1 kg

PE (potential energy) = 50 J

g = (gravity) = 9.8 m/s^2

Apply:

PE = mgh

Solve for h (height)

h = PE / mg

Replacing:

h = 50 / (1 *9.8 )

h = 5.1 m