Posted by **Raqual ** on Tuesday, November 8, 2011 at 7:40pm.

A horizontal force of 150 N is used to push a 43.5 kg packing crate a distance of 5.30 m on a rough horizontal surface. If the crate moves at constant speed, find each of the following.

(a) the work done by the 150 N force

(b) the coefficient of kinetic friction between the crate and the surface

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