A roller coaster 425 kilogram moves from c 500 meter


A roller coaster (425 kilogram) moves from C (5.00 meter above the ground) to D (26.0 meter above the ground). Two non conservative forces are present: friction does -2.00 x 104 Joule of work on the car, and a chain mechanism does +3.00 x 104 Joule of work to help the car up a long climb. Determine the change in the car kinetic energy, ΔKE = KEf - KEi, from C to D? What is the answer in J?

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Physics: A roller coaster 425 kilogram moves from c 500 meter
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