With this information, you can calculate the quantity of feet per second 821 kilometers per hour is equal to.
¿What is the inverse calculation between 1 foot per second and 821 kilometers per hour?
Performing the inverse calculation of the relationship between units, we obtain that 1 foot per second is 0.0013365164 times 821 kilometers per hour.
Which is the same to say that 821 kilometers per hour is 748.21376 feet per second.
Eight hundred twenty-one kilometers per hour equals to seven hundred forty-eight feet per second. *Approximation
A foot per second is zero times eight hundred twenty-one kilometers per hour. *Approximation
