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OpenStudy (anonymous):

A roller coaster has two vertical loops one after the other. The roller coaster has a speed of 7 m/s at the top of the first loop with a height of 22 m. It then proceeds around the second vertical loop with a height of 15 m. What is the speed of the roller coaster at the top of the second vertical loop?

sam (.sam.):

You can refer to this, its similar http://ca.answers.yahoo.com/question/index?qid=20110207183830AAgcGIG

OpenStudy (anonymous):

Work conservation of energy on this one.

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