In loading a fish delivery truck a person pushes a block, Ask an Expert

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In loading a fish delivery truck, a person pushes a block ofice up a 20 degree incline at a constant speed. The push is150 N in magnitude and parallel to the incline. The block hasa mass of 35.0 kg.

A. Is the incline frictionless?
B. If not, what is the force of kinetic friction on the block of ice?

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