How do an empty truck's stopping distances compare to a loaded truck's?

Answer: B — Longer

An empty truck generally has a longer stopping distance compared to a loaded truck. This occurs primarily because the mass of a vehicle plays a significant role in its braking performance. When a truck is loaded, its weight increases, which gives it more traction on the road. The additional weight helps in maintaining better contact with the road surface, thus allowing the brakes to be more effective. The extra mass aids in overcoming inertia when the truck is in motion, contributing to a more stable and efficient stopping process. Conversely, an empty truck, while it may be lighter and easier to accelerate, has reduced traction due to its lesser weight. This can lead to longer stopping distances because the braking force may not be as effectively transferred to the road surface. Furthermore, on slippery or wet roads, lighter trucks can easily lose traction, further increasing the distance required to come to a complete stop. Understanding this dynamic is crucial for drivers as it underscores the importance of adjusting driving habits according to the load status of the vehicle.