Here's why:
* Friction opposes motion: Friction is a force that always acts in the opposite direction of motion. When two objects move against each other, the surfaces in contact experience friction.
* Friction converts kinetic energy to heat: Friction converts the kinetic energy of the objects into heat, causing the objects to slow down.
* Types of friction: There are several types of friction, but the most relevant here are:
* Static friction: This friction prevents the objects from starting to move.
* Kinetic friction: This friction acts when the objects are already moving against each other.
Example: Imagine two cars colliding. The force of the impact causes them to decelerate rapidly. However, friction between the tires and the road, as well as friction between the cars' bodies, also plays a role in reducing their acceleration and bringing them to a stop.
