With this information, you can calculate the quantity of feet per second 321 kilometers per hour is equal to.

¿What is the inverse calculation between 1 foot per second and 321 kilometers per hour?

Performing the inverse calculation of the relationship between units, we obtain that 1 foot per second is 0.0034183178 times 321 kilometers per hour.

Which is the same to say that 321 kilometers per hour is 292.54156 feet per second.

Three hundred twenty-one kilometers per hour equals to two hundred ninety-two feet per second. *Approximation

A foot per second is zero times three hundred twenty-one kilometers per hour. *Approximation