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

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

Performing the inverse calculation of the relationship between units, we obtain that 1 foot per second is 0.0021240442 times 321 miles per hour.

Which is the same to say that 321 miles per hour is 470.8 feet per second.

Three hundred twenty-one miles per hour equals to four hundred seventy feet per second. *Approximation

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