Question: The force that accelerates a car along a flat road is the frictional force exerted by the road on the car's tires. (a) Explain why

The force that accelerates a car along a flat road is the frictional force exerted by the road on the car's tires.

(a) Explain why the acceleration can be greater when the wheels do not spin.

(b) If a car is to accelerate from 0 to 90 km/h in 12 s at constant acceleration, what is the minimum coefficient of friction needed between the road and tires? Assume that half the weight of the car is supported by the drive wheels.

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