In the figure a constant external force p 160 n is applied, Ask an Expert

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In the figure, a constant external force P = 160 N is applied to a 20.0-kg box, which is on a rough horizontal surface. While the force pushes the box a distance of 8.00 m, the speed changes from 0.500 m/s to 2.60 m/s. What ia the work done by friction during this process?

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