A roller coaster 482 kg moves from a 363 m above the ground, Physics

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A roller coaster 482 kg moves from a 363 m above the ground

A roller coaster (482 kg) moves from A (3.63 m above the ground) to B (28.6 m above the ground). Two non-conservative forces are present: friction does -1.67 x 104 J of work on the car, and a chain mechanism does +5.83 x 104 J of work to help the car up a long climb. What is the change in the car's kinetic energy KEf - KEo from A to B?

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Physics: A roller coaster 482 kg moves from a 363 m above the ground

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Physics: A roller coaster 482 kg moves from a 363 m above the ground

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