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Which statement best describes why a machine is useful? A-A machine does a greater amount of work than the amount of work that is done on it. B-A machine does a smaller amount of work than the amount of work that is done on it. C-A machine can decrease both the input force and the input distance needed to do a given amount of work. D-A machine can decrease either the input force or the input distance needed to do a given amount of work.

Tara Andrews

in Physics

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Donald Ward on June 17, 2018

(D) A machine can decrease the input force or the input distance needed to perform a certain amount of work, because I just take the test. Good luck on completing the course!


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