A 355 kg coaster is moving 9.00 m/s when it is at the very top of a crest of a roller coaster track. The coaster plunges down and then rises to the next crest. The first crest is 95.0 m above the ground and the second crest is 75.0 m above the ground. Assuming a frictionless track, the speed of the coaster when it reaches the top of the second crest is most nearly
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A 355 kg coaster is moving 9.00 m/s when it is at the very top of a crest of a roller coaster track....
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