A car is moving on a level road. If the driver turns off the engine of the car, the car’s speed decreases gradually and ultimately it comes to a stop. A student says that two forces act on the car which bring it to a stop. What could these forces be? Which of these two forces contributes more to slow down and stop the car?

When the driver turns off the engine of a moving car on a level road, the car’s speed decreases gradually and ultimately it comes to a stop. It is due to two forces acting on the car which brings it to a stop and these two forces are:

(i) Force of friction between the wheels of the car and the surface of the road.

(ii) Air ressistance

Force of friction contributes more to slow down and stopping the car.

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Updated on: 10-Oct-2022

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