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September 22, 2014

September 22, 2014

Posted by **andrea** on Tuesday, February 22, 2011 at 1:29pm.

A. Negative net work done on an object always reduces the object's kinetic energy.

B. If the work done on an object by a force is zero, then either the force or the displacement must have zero magnitude.

C. If a force acts downward, it does negative work.

D. The formula W = Fd cos theta can be used only if the force is constant over the distance.

- physics -
**Loveme**, Wednesday, February 29, 2012 at 12:04pmAD

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