Posted by **amy** on Saturday, October 31, 2009 at 4:25pm.

A horizontal spring with spring constant 73.2 N/m is compressed 16.7 cm and used to launch a 2.42 kg box across a frictionless, horizontal surface. After the box travels some distance, the surface becomes rough. The coefficient of kinetic friction of the box on the surface is 0.148. How far does the box slide across the rough surface before stopping?

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