Which of the following can always be said about empty trucks compared to loaded trucks?

Empty trucks require longer stopping distances compared to loaded trucks because they have less weight and thus less traction on the road. A loaded truck has more weight, which increases the friction between the tires and the road surface, allowing for better control and quicker stops. The momentum of an empty truck can also lead to a longer stopping distance since the brakes need to work harder to compensate for the reduced weight.

While it might seem intuitive that a truck without cargo would stop faster, it's important to consider factors such as brake performance, weight distribution, and traction that all come into play during braking. Overall, the dynamics of stopping are influenced significantly by the presence of load, and in this case, the truth is that empty trucks do indeed require longer stopping distances when compared to their loaded counterparts.