With this information, you can calculate the quantity of meters per second 21 kilometers per hour is equal to.
¿What is the inverse calculation between 1 meter per second and 21 kilometers per hour?
Performing the inverse calculation of the relationship between units, we obtain that 1 meter per second is 0.17142857 times 21 kilometers per hour.
Which is the same to say that 21 kilometers per hour is 5.8333333 meters per second.
Twenty-one kilometers per hour equals to five meters per second. *Approximation
A meter per second is zero times twenty-one kilometers per hour. *Approximation