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April 20, 2014

Homework Help: college physics

Posted by Anonymous on Sunday, March 14, 2010 at 2:34pm.

A 12100 kg railroad car travels alone on a level frictionless track with a constant speed of 20.5 m/s. A 5850 kg load, initially at rest, is dropped onto the car. What will be the car's new speed? Please help!

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