An air plane is flying due east relative to still air at a speed of 320 km/h. There is a 65 km/h wind blowing to ward the north, as measured by an observer on the ground. What is the velocity of the plane measured by the ground observer?

Answer 1

X = Vp = 320 km/h.
Y = Vw = 65km/h.

Vr = sqrt(X^2 + Y^2) = Resultant velocity.

Answer 2

vx=18.05 m/s and vy=88.88 m/s