With this information, you can calculate the quantity of feet per second 439 knots is equal to.
¿What is the inverse calculation between 1 foot per second and 439 knots?
Performing the inverse calculation of the relationship between units, we obtain that 1 foot per second is 0.0013496214 times 439 knots.
Which is the same to say that 439 knots is 740.94853 feet per second.
Four hundred thirty-nine knots equals to seven hundred forty feet per second. *Approximation
A foot per second is zero times four hundred thirty-nine knots. *Approximation