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September 4, 2015

Homework Help: physics

Posted by Melissa on Sunday, March 25, 2012 at 12:43pm.

A woman pushes a refrigerator across the floor at a steady speed of 20cm/s . If she has to push with a horizontal force of 400 N to keep it moving , is the force of friction less than 400 N , 400 N, more than 400 N, why

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