Relative Motion - I need help on it and more help I need help on Relative Motion. I'm about to literally pull my hair out if I don't understand how to do this. I would very appreciate it if someone could help me out with this one problem and I probably could do the other by myself. The pilot of an aircraft wishes to fly due west in a 50.0 km/h wind blowing toward the south. The speed of the aircraft in the absence of a wind is 205 km/h. a. In what direction should the aircraft head? b. What should its speed be relative to the ground? I've spent at least 3 hours on this homework. This is what I started out doing: I sketched a picture of the aircraft's and wind's direction. The plane was going west 205 km/h and the 50 km/h wind was going south. And I tried finding the displacement using the pythagorean theorem but the answer was wrong. And I divided 205 km/h over 50 km/h and used tan-1 with the anwer to get the direction but it was wrong. I'm not even sure if I went about the problem right.