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soapbox derby is to be held on a frictionless hill with a 28 m vertical drop. The track is 300m long. a. What is the

soapbox derby is to be held on a frictionless hill with a 28 m vertical drop. The track is 300m long. a. What is the change in potential energy of a racecar from start to finish if it and the driver have a combined mass of 113 kg? [-31000 J]

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