A Porsche 944 Turbo has a rated engine power of 205 hp. 30% of the power is lost

Question

A Porsche 944 Turbo has a rated engine power of 205 hp. 30% of the power is lost in the drive train, and 70% reaches the wheels. The total mass of the car and driver is 1500 kg, and two-thirds of the weight is over the drive wheels. (a) What is the maximum acceleration of the Porsche on a concrete surface where p = 0.84? Hint: What force pushes the car forward? m/s2 (b) What is the speed of the Porsche at maximum power output? m/s (c) If the Porsche accelerates at amax, how long does it take until it reaches the maximum power output? s

Explanation / Answer

2.45

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