With this information, you can calculate the quantity of feet per second 685 miles per hour is equal to.
¿What is the inverse calculation between 1 foot per second and 685 miles per hour?
Performing the inverse calculation of the relationship between units, we obtain that 1 foot per second is 0.00099535501 times 685 miles per hour.
Which is the same to say that 685 miles per hour is 1004.6667 feet per second.
Six hundred eighty-five miles per hour equals to one thousand four feet per second. *Approximation
A foot per second is zero times six hundred eighty-five miles per hour. *Approximation
