Convert 21 Feet per Second to Miles per Hour
How fast is 21 feet per second? What is 21 feet per second in miles per hour? 21 fps to mph conversion.
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21 Feet per Second ≈
14.318182 Miles per Hour
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Decimal places
Result in Plain English
21 feet per second is equal to about 14.3 miles per hour.
Result as a Fraction
21 feet per second
= 315⁄22 miles per hour
= 14 and 7⁄22 miles per hour
In Scientific Notation
21 feet per second
= 2.1 x 101 feet per second
≈ 1.43182 x 101 miles per hour
Feet per Second
A foot per second is a unit of speed. Something traveling at one foot per second is traveling exactly 0.3048 meters per second, or about 0.682 miles per hour.Common abbreviations: ft/s, fps
Miles per Hour
A mile per hour is a unit of speed commonly used in the United States. It is equal to exactly 1.609344 kilometers per hour.Common abbreviations: mph, mi/h