University Physics with Modern Physics with Mastering Physics (11th Edition)

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7.25: a) Gravity does negative work, J. 118 ) m 16 )( s m 80 . 9 )( kg 75 . 0 ( 2 - = - b) Gravity does 118 J of positive work.
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Unformatted text preview: c) Zero d) Conservative; gravity does no net work on any complete round trip....
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