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If you are traveling 55 mph in a 30-foot vehicle, you should leave how many seconds of following distance?

A. 6 seconds
B. 3 seconds
C. 4 seconds
D. 7 seconds

User Aidanc
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To calculate the following distance, we need to convert the speed from mph to ft/s and then calculate the time it takes for the vehicle to travel its own length. The recommended following distance for a vehicle traveling 55 mph in a 30-foot vehicle is approximately 0.37 seconds.

When driving, it is important to leave enough following distance to stop safely in case of an emergency. The recommended following distance is determined by the time it takes for the vehicle to travel its own length at the current speed.

To calculate the following distance, we need to convert the speed from mph to ft/s. Since 1 mph is equal to 1.47 ft/s, we multiply the speed by 1.47.

So, a vehicle traveling at 55 mph would be moving at a speed of approximately 80.85 ft/s (55 mph * 1.47 ft/s).


Next, we need to calculate the time it takes for the vehicle to travel its own length. The length of the vehicle is given as 30 feet. So, we divide the length by the speed to get the time:

= Length / Speed = 30 ft / 80.85 ft/s ≈ 0.37 seconds.
Therefore, the recommended following distance for a vehicle traveling 55 mph in a 30-foot vehicle is approximately 0.37 seconds.

However, it is important to note that this is just a guideline and other factors such as road conditions and weather should also be taken into consideration when determining the following distance.

User Lior Dahan
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