Question

Parking on a Hill

When you park on a downhill grade, turn
your wheels toward the curb and set your
parking brake.
If you park on an uphill grade, turn your
wheels to the left, let your car roll back until
the right front wheel rests against the curb
and stops. Set your parking brake.
If there is no curb, turn the wheels to the right
so that the car will roll away from the center
of the road in the event the brakes fail.
Always set your parking brake.
1) Downhill - Curb
2) Uphill - Curb
3) Uphill - No Curb

Answer 1

Understanding the relationship between static and kinetic friction is important for smooth braking. Letting up on the brake pedal before a full stop transitions the force from kinetic to static friction, preventing rough stops.

Step-by-step explanation:

When you learn to drive, it's important to understand the relationship between static and kinetic friction during braking. Kinetic friction occurs when objects are sliding against each other, and it acts to slow down a moving object, such as a car. However, kinetic friction is usually lower than static friction, which is the force that needs to be overcome to start moving an object from rest. As you come to a stop in a car, letting up on the brake pedal slightly allows the wheels to roll slightly rather than skidding, which transitions the braking force from kinetic back to static friction. This provides a smoother stop because static friction is stronger and can hold the car still without slipping.