Calculate the power required of a 1.4×103 kg car that is climbing a 12∘ hill at a steady speed of 72 km⋅h−1. Assume that the car must also overcome a constant friction force of 750 N. The gravitational field strength is 9.81 N⋅kg−1. The unknown, Power P, is related to the rate of work done against a force. Here that rate is Fv where F is the force and v is the constant speed of the car.
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