Final answer:
In a comparison of stopping distances at 55 mph, a tractor-trailer truck typically needs the stopping distance of an automobile traveling at the same speed, which is four times the distance the car requires.
Explanation:
Studies have shown that a tractor-trailer truck traveling
at 55 mph will typically need the stopping
distance of an automobile traveling at the same speed.
The correct answer is: Four times.
When considering stopping distances, it is important to take into account both the initial reaction time and the braking distance required for a vehicle to come to a stop.
Learn more about Stopping Distances here:
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