With this information, you can calculate the quantity of meters per second 81 knots is equal to.
¿What is the inverse calculation between 1 meter per second and 81 knots?
Performing the inverse calculation of the relationship between units, we obtain that 1 meter per second is 0.02399808 times 81 knots.
Which is the same to say that 81 knots is 41.67 meters per second.
Eighty-one knots equals to forty-one meters per second. *Approximation
A meter per second is zero times eighty-one knots. *Approximation