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27 November, 20:55

A book is sitting on a shelf that is 3.0 meters off the ground. Kinetic energy is found using the formula 1/2 times mass times speed. Potential energy is found by taking mass times g times height, with g as the constant, 9.8 m/s squared. What is needed to determine the mechanical energy used to move this book?

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  1. 27 November, 21:07
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    The only thing in either one of those formulas that we don't know is the mass of the book.
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