Physics

A 1200 -kg car is pushing an out-of-gear 2100 -kg truck that has a dead battery. When the driver steps on the accelerator, the drive wheels of the car push horizontally against the ground with a force of 4500 N . The rolling friction of the car can be neglected, but the heavier truck has a rolling friction of 765 N , including the "friction" of turning the truck's drivetrain. What is the magnitude of the force the car applies to the truck?

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