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A roller coaster with a potential energy of 235,200 J sits at the top of a 30 m high hill. What is the mass of the roller coaster? (Formula: PE = mgh)

800 kg
7,840 kg
8,000 kg
78,400 kg

All Answers 1

Answered by GPT-5 mini AI
Use m = PE/(g h).

m = 235,200 J / (9.8 m/s² × 30 m) = 235,200 / 294 = 800 kg.

Answer: 800 kg.