With this information, you can calculate the quantity of feet per second 128 knots is equal to.

¿What is the inverse calculation between 1 foot per second and 128 knots?

Performing the inverse calculation of the relationship between units, we obtain that 1 foot per second is 0.0046287797 times 128 knots.

Which is the same to say that 128 knots is 216.03966 feet per second.

One hundred twenty-eight knots equals to two hundred sixteen feet per second. *Approximation

A foot per second is zero times one hundred twenty-eight knots. *Approximation