At what speed is the average stopping distance approximately 292 feet?

To determine the average stopping distance of approximately 292 feet, it's important to consider the formulas that relate speed to stopping distance. Generally, as speed increases, the stopping distance also increases due to the greater momentum the vehicle has at higher speeds.

At 60 mph, the stopping distance is significantly extended because of the time it takes for a driver to react and initiate braking, combined with the physical distance a vehicle travels while braking. For a vehicle traveling at 60 mph, the stopping distance typically accounts for both perception and reaction time, as well as the actual braking distance. This cumulative effect results in a total stopping distance that approximates 292 feet, reflecting how the distance required to come to a complete stop grows exponentially with speed.

In contrast, the other options represent lower speeds, leading to shorter stopping distances. For instance, at 30 mph, the stopping distance would be much less than 292 feet, and at 40 mph, while closer, it would still fall below that mark. Hence, 60 mph is the speed at which the stopping distance approaches 292 feet, underlining the direct correlation between speed and stopping distance.