What is the role of friction in the braking system?

The role of friction in the braking system is fundamentally to slow down the vehicle. When the brakes are applied, the brake pads make contact with the brake rotor, creating friction. This friction converts the kinetic energy of the moving vehicle into thermal energy, thereby reducing the speed of the vehicle. The effectiveness of this process is crucial for safe stopping, as the higher the friction, the more quickly the vehicle can decelerate.

Understanding the function of friction highlights its importance in vehicle safety and control, making it clear why slowing down the vehicle is the primary role of friction in braking systems.