5 miles/hour (5280 feet/1 mile)(1 hour/3600 seconds)
= 7.3 feet per second
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4,000 feet
I work that out as 4.87 seconds.
5
146.6 feet per second.
About 41 feet per second.
About 4.55 feet per second.
If a car is moving at 100 feet per second, then it is traveling at 100 feet per second.
73.33 feet per second.
100 mph = 146.66 feet per second
6.1 mph = 8.95 feet / second.
8 mph = 11.7 feet per second.
5.583 feet per second.