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A truck of mass 1200 kg is moving at 20m/s downhill on a 6-degree incline  It has...

A truck of mass 1200 kg is moving at 20m/s downhill on a 6-degree incline  It has a forward force of 800 N due to the engine and a 300 N retarding force of friction. What is the velocity of the truck after 10 seconds? What is the coefficient of friction?

Answer in 3 decimal places, and include full equation please.

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