With this information, you can calculate the quantity of feet per minute 40 knots is equal to.

¿What is the inverse calculation between 1 foot per minute and 40 knots?

Performing the inverse calculation of the relationship between units, we obtain that 1 foot per minute is 0.00024686825 times 40 knots.

Which is the same to say that 40 knots is 4050.7437 feet per minute.

Forty knots equals to four thousand fifty feet per minute. *Approximation

A foot per minute is zero times forty knots. *Approximation