With this information, you can calculate the quantity of feet per second 20 knots is equal to.
¿What is the inverse calculation between 1 foot per second and 20 knots?
Performing the inverse calculation of the relationship between units, we obtain that 1 foot per second is 0.02962419 times 20 knots.
Which is the same to say that 20 knots is 33.756197 feet per second.
Twenty knots equals to thirty-three feet per second. *Approximation
A foot per second is zero times twenty knots. *Approximation