A plane is traveling North at 80km/hr into a 20 km/hr headwind (South). What is the plane's resultant velocity?

Consider our plane flying at a speed of 80 km/hr into a 40 km/hr crosswind. Its speed, relative to the ground, can be calculated by adding the two vectors as shown on the right. What happens to the speed of the plane as the crosswind increases in magnitude? Look at the animation on the right. It is obvious that the speed of the plane, relative to the ground, increases in magnitude.

Explanation:

f=ma newton's second law 7x8=56n