posted by Mariel .
Find th resultant and speed direction of the airplane relative to the ground....
AN airplane is heading west at velocity 950km/hr and wind is blowing northward at velocity of 55.o km/hr
This only makes sense if the 950 km/h west velocity is the velocity of the plane relative to the air
Add it vectorially to the wind velocity vector, to get the velocity of the plane with respect to the ground.
It will have components of 950 km/h west and 55 km/h north.
The vector sum has magnitude 951.6 km/h. You can get the direction from the ratio of components (arctan 55/950 north of west)