A loaded freight train of 100 cars weighs approximately 6,000 tons and requires how much distance to stop?

A loaded freight train, such as the one described with 100 cars weighing approximately 6,000 tons, takes a significantly longer distance to come to a complete stop compared to smaller vehicles. The reason option A is correct is that freight trains rely on the physics of momentum and require a considerable stopping distance due to their massive weight and the limitations of friction between the train wheels and the tracks.

In practical terms, this stopping distance can often exceed a mile or more, depending on factors such as track conditions, speed of the train, and the weight of the cargo. Trains do not have the same braking capabilities as cars, and therefore, they need ample space to decelerate safely. The significant stopping distance is a crucial element for both train operators and for people near railroads, as it necessitates greater caution and awareness when crossing tracks or navigating areas near train services.

While the other options may suggest long distances or relatable measurements, none accurately convey the reality of a freight train's braking distance as it typically stretches to a mile or more in various scenarios.