With this information, you can calculate the quantity of feet per second 15 knots is equal to.
¿What is the inverse calculation between 1 foot per second and 15 knots?
Performing the inverse calculation of the relationship between units, we obtain that 1 foot per second is 0.03949892 times 15 knots.
Which is the same to say that 15 knots is 25.317148 feet per second.
Fifteen knots equals to twenty-five feet per second. *Approximation
A foot per second is zero times fifteen knots. *Approximation
