Why does an empty truck require a greater stopping distance?

Answer: B — It has less traction

An empty truck requires a greater stopping distance because it has less traction. Traction is essential for effective braking, as it allows the tires to grip the road surface firmly. When a truck is empty, its weight is significantly reduced, leading to decreased downward force on the tires. This reduction in weight results in a corresponding decrease in traction, making it easier for the wheels to lose grip, especially on slippery or uneven surfaces. Consequently, when braking, an empty truck can slide more easily, which extends the distance needed to come to a complete stop. The braking system may still function effectively, but the lack of weight means that the tires cannot grip the road as well, ultimately resulting in a longer stopping distance.