QuestionJune 24, 2025

Keeping in mind the average reaction time, a motorist will travel 11 feet for each __ of speed before hitting the brake. 20 mph 10 mph 5 mph 15 mph

Keeping in mind the average reaction time, a motorist will travel 11 feet for each __ of speed before hitting the brake. 20 mph 10 mph 5 mph 15 mph
Keeping in mind the average reaction time, a motorist will
travel 11 feet for each __ of speed before hitting
the brake.
20 mph
10 mph
5 mph
15 mph

Solution
4.2(313 votes)

Answer

5 mph Explanation 1. Identify the relationship The average reaction time distance is typically calculated as 1.5 seconds of travel at a given speed. 2. Calculate distance per mph For each mph, the motorist travels approximately 1.5 feet (since 1 mph = 1.5 ft/s). 3. Determine speed for 11 feet Solve for speed: 11 \text{ feet} = x \times 1.5 \text{ feet/mph}, where x is the speed in mph. x = \frac{11}{1.5} \approx 7.33 mph. 4. Match closest option Closest option to 7.33 mph is 5 mph.

Explanation

1. Identify the relationship<br /> The average reaction time distance is typically calculated as 1.5 seconds of travel at a given speed.<br /><br />2. Calculate distance per mph<br /> For each mph, the motorist travels approximately 1.5 feet (since 1 mph = 1.5 ft/s).<br /><br />3. Determine speed for 11 feet<br /> Solve for speed: $11 \text{ feet} = x \times 1.5 \text{ feet/mph}$, where $x$ is the speed in mph.<br /> $x = \frac{11}{1.5} \approx 7.33$ mph.<br /><br />4. Match closest option<br /> Closest option to 7.33 mph is 5 mph.
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