Final answer:A vehicle traveling 40 mph is going approximately 58.67 feet per second, calculated by converting miles to feet and hours to seconds.Explanation:To convert the vehicle's speed from miles per hour to feet per second, you can use the fact that 1 mile equals 5280 feet, and there are 3600 seconds in one hour. First, you need to determine how many feet are traveled in one hour by multiplying 40 miles by 5280 feet per mile. Then, to find out how many feet are traveled in one second, you divide that number by 3600 seconds.The calculation would look like this:40 miles/hour × 5280 feet/mile = 211200 feet/hour211200 feet/hour ÷ 3600 seconds/hour ≈ 58.67 feet/secondTherefore, a vehicle traveling 40 mph is going approximately 58.67 feet per second....

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