the answer is 15/22, or 0.682
There are 5280 feet to the mile, and 3600 seconds to the hour.
If you remember 60mph is 88ft/sec, you won't go far wrong!
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To convert miles per hour to feet per second, you can multiply the value in miles per hour by 1.46667. This conversion factor accounts for the ratio of 5280 feet in a mile and 3600 seconds in an hour.
5280 feet= 1 mile
3600 seconds = 1 hour
1 mile/hour = 5280/3600 secs = 1.4666666 fps
To convert miles per hour to feet per second, you need to multiply by 1.4667. Therefore, a car traveling at 140 miles per hour is moving at approximately 205.33 feet per second.
27404 feet per second is approximately equal to 18697 miles per hour.
There are 102.67 feet per second in 70 miles per hour.
About 1.364 miles per hour.
2700 miles per hour is equal to 3960 feet per second.