With this information, you can calculate the quantity of feet per second 309 kilometers per hour is equal to.

¿What is the inverse calculation between 1 foot per second and 309 kilometers per hour?

Performing the inverse calculation of the relationship between units, we obtain that 1 foot per second is 0.003551068 times 309 kilometers per hour.

Which is the same to say that 309 kilometers per hour is 281.60542 feet per second.

Three hundred nine kilometers per hour equals to two hundred eighty-one feet per second. *Approximation

A foot per second is zero times three hundred nine kilometers per hour. *Approximation