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Question:

I need help on my Science Homework?

Two cars are lifted to the same elevation in a service station If one car is twice as massive as the other, how do their potential energies compare

Answer:

Potential energy PE mgh, where m is the mass of the object, g is the acceleration due to gravity, and h is the height to which the object is lifted. PE (car 1) mgh PE (car 2) m'gh (2m)gh2mgh Therefore, the potential energy of the second car (the one that is twice as massive) is twice that of the first car.

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