Since an hour has 3600 seconds, multiply by 3600.
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It is a measure of acceleration. Every hour, the speed increases by 343 metres per second.
343/C hours
1 mile per hour = 22/15 = 1.4666... feet per second (rounded, repeating)The following are exact numbers:-- 15 miles per hour = 22 feet per second-- 30 miles per hour = 44 feet per second-- 60 miles per hour = 88 feet per second-- 90 miles per hour = 132 feet per second-- 120 miles per hour = 176 feet per second
3.5 (miles per second) = 20,277.73 km per hour.
4.7 metres per second is about 10.5 miles per hour.