An aeroplane needs to fly due east from city A to city B at a speed of 400km/hr. However a 50km/hr wind blows constantly from the north. In what direction must aeroplane head and at what speed must it travel?

Answer 1

(1) draw vectors for speed direction
adding vectors head-to-tail
Results: a right angle
(2) draw the resultant vector (hypothenuse) completing the right triangle.
(30 Solve using pythag. theorem