Final answer:
To prevent rolling backward when starting to move in a vehicle, apply the hand valve, engage the clutch before releasing the brake, and use the parking brake as needed. The concept of easing the brake pedal to stop without a is related to the smooth transition from kinetic to static friction.
Step-by-step explanation:
To start moving without rolling backward, particularly on an incline, you can use several techniques. Firstly, you can apply the hand valve, also known as the parking brake, to secure the vehicle from rolling back. Secondly, engaging the clutch before removing your foot from the brake can also prevent the vehicle from moving backward as it allows you to control the transfer of power to the wheels more smoothly. Finally, you can put on the parking brake whenever necessary as a safety measure to ensure the car does not roll back.
When you learn to drive, you are taught to let up slightly on the brake pedal before coming to a complete stop to prevent the car from stopping. That is a result of the abrupt transition from kinetic friction (friction when objects are moving relative to each other) to static friction (friction when objects are not moving relative to each other). By easing off the brake, you can create a smoother transition from moving to a full stop without the abrupt increase in static friction that causes.