W = F*d W = -F*d W = 0 W = F*v W = - F*v
A car traveling to the right with a speed v brakes to a stop in a distance d. The work done on the car by the frictional force F is: (Assume that the frictional force is constant). W = F*d W = -F*d W = 0 W = F*v W = - F*v. v. d. F. Car. Truck.
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