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A worker pushes a heavy box with a force of 250 N at an angle = 38 below horizontal as shown. The box slides

A worker pushes a heavy box with a force of 250 N at an angle = 38 below horizontal as shown. The box slides on level ground over a distance of 50 m. A friction force of 160 N acts on the box during the motion. a) What is the work done by the worker? b) What is the net work on the box? m

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