With this information, you can calculate the quantity of feet per second 821 miles per hour is equal to.
¿What is the inverse calculation between 1 foot per second and 821 miles per hour?
Performing the inverse calculation of the relationship between units, we obtain that 1 foot per second is 0.00083047282 times 821 miles per hour.
Which is the same to say that 821 miles per hour is 1204.1333 feet per second.
Eight hundred twenty-one miles per hour equals to one thousand two hundred four feet per second. *Approximation
A foot per second is zero times eight hundred twenty-one miles per hour. *Approximation
