If we changed our speed limit signs to metric, what would probably replace 55 mi/h? ( round your answer to the nearest 1 km/h.)

Need in all of themmm only answer if you know plsssss

Acar moves a distance of 50.0 km west, followed by a distance of 64.9 km north what was the magnitude of the displacement of the car, in units of kilometers?

What is the stall speed at sea level of an airplane that weights 10000 lbs., has a wing area of 300ft^2, and a maximum lift coefficient of 1.4? what is the stall speed if flaps that double cl,max are applied?