# Physics

A horizontal spring with spring constant 110N/m is compressed 16cm and used to launch a 2.8kg 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 0.15.

Use work and energy to find how far the box slides across the rough surface before stopping.

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2. 👎 0
3. 👁 195
1. try kx=Ffmgh , then solve for h , (its an idea)

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2. 👎 0
posted by grey

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