Convert 21 Meters per Second to Miles per Hour
How fast is 21 meters per second? What is 21 meters per second in miles per hour? 21 m/s to mph conversion.
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21 Meters per Second ≈
46.975662 Miles per Hour
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Result in Plain English
21 meters per second is equal to about 47.0 miles per hour.
In Scientific Notation
21 meters per second
= 2.1 x 101 meters per second
≈ 4.69757 x 101 miles per hour
Meters per Second
A meter per second is a unit of speed. One meter per second is exactly 3.6 kilometers per hour, or about 2.237 miles per hour.Common abbreviations: m/s, mps
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