With this information, you can calculate the quantity of feet per second 621 kilometers per hour is equal to.
¿What is the inverse calculation between 1 foot per second and 621 kilometers per hour?
Performing the inverse calculation of the relationship between units, we obtain that 1 foot per second is 0.0017669565 times 621 kilometers per hour.
Which is the same to say that 621 kilometers per hour is 565.94488 feet per second.
Six hundred twenty-one kilometers per hour equals to five hundred sixty-five feet per second. *Approximation
A foot per second is zero times six hundred twenty-one kilometers per hour. *Approximation