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A 15 kg box is sitting in the bed of a pickup truck. The truck begins to accelerate at a constant rate of 1.5 m/s 2. Given that the friction between the box and the truck bed is characterized by a coefficient of kinetic friction of 0.40 50 and a coefficient of static friction equal to 0.75, what is the magnitude of the friction force acting on the box once the truck begins its acceleration?
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