Final answer:
The driver cannot stop on a slippery section of the road when they apply their brakes because the static friction between the tires and the road is not enough to provide sufficient stopping force.
Step-by-step explanation:
When a driver applies the brakes on a slippery section of the road, the tires experience both static friction and kinetic friction. Static friction occurs when there is no relative motion between the tires and the road's surface, while kinetic friction occurs when there is sliding motion between the two surfaces. On a slippery road, the static friction between the tires and the road is not enough to provide sufficient stopping force, causing the tires to continue sliding without stopping. This is why the driver cannot stop on a slippery section of the road when they apply their brakes.