Question

A 500.-kilogram roller coaster starts from rest at the top of an 80.0-meter hill. What is its potential enegy halfway down the hill?

Answer 1

Answer: 392,000 J

Explanation:

Ep=mgh

Ep=500(mass)9.8(gravity)80(height)

500•9.8•80=392,000 J

Answer 2

the answer is 200kg

Explanation: