With this information, you can calculate the quantity of feet per second 90 knots is equal to.

¿What is the inverse calculation between 1 foot per second and 90 knots?

Performing the inverse calculation of the relationship between units, we obtain that 1 foot per second is 0.0065831533 times 90 knots.

Which is the same to say that 90 knots is 151.90289 feet per second.

Ninety knots equals to one hundred fifty-one feet per second. *Approximation

A foot per second is zero times ninety knots. *Approximation