Which forces slow down a car as it moves?

The primary forces that slow down a car as it moves are frictional forces, specifically rolling resistance between the tires and the road surface, as well as air resistance. Rolling resistance is caused by the deformation of the tires and the friction between the tires and the road, while air resistance, also known as drag, opposes the car's motion through the air. These forces act in the opposite direction to the car's motion, converting kinetic energy into other forms of energy such as heat.