question archive A roller coaster cart of mass m = 379 kg starts stationary at point A, where h1 = 21 m and a while later is at B, where h2 = 7
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A roller coaster cart of mass m = 379 kg starts stationary at point A, where h1 = 21 m and a while later is at B, where h2 = 7.6 m. The acceleration of gravity is 9.8 m/s 2 .
What is the potential energy of the cart relative to the ground at A? Answer in units of J.
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