Question

If a car is driven down a hill, the driver must put more pressure on the brakes to make the car stop than if it was on level ground. Explain your answer.

Answer 1

On level ground the force needed is less as it does not involve the weight of the car.
When driving down a hill the force needed will also include a component of the weight (depending on the incline) so more force needed so more pressure on the brakes is needed.