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OpenStudy (anonymous):
A 720 kg roller-coaster car starts off from Location A. Assuming friction does not impede the car's motion, what will be the change in its potential energy by moving from Location A to Location B? Location B has a height of 85 m. 7.1 × 103 J 6.1 × 104 J 6.0 × 105 J 7.8 × 105 J
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