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
If a car is moving at 100 feet per second, then it is traveling at 100 feet per second.
146.6 feet per second.
About 41 feet per second.
About 4.55 feet per second.
73.33 feet per second.
100 mph = 146.66 feet per second
8 mph = 11.7 feet per second.
6.1 mph = 8.95 feet / second.
5.583 feet per second.