With this information, you can calculate the quantity of feet per second 665 miles per hour is equal to.

¿What is the inverse calculation between 1 foot per second and 665 miles per hour?

Performing the inverse calculation of the relationship between units, we obtain that 1 foot per second is 0.0010252905 times 665 miles per hour.

Which is the same to say that 665 miles per hour is 975.33333 feet per second.

Six hundred sixty-five miles per hour equals to nine hundred seventy-five feet per second. *Approximation

A foot per second is zero times six hundred sixty-five miles per hour. *Approximation