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OpenStudy (anonymous):
A roller-coaster starts at a height of 30m above the ground. At the bottom of a loop. the roller-coaster is at a height of 10m. Approximately, how much gravitational potential energy is lost by a 75-kg rider? ) 19.6 joules Eliminate B) 1470 joules C) 14,700 joules D) 22,050 joules
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OpenStudy (anonymous):
do you do k-12 ??
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