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Oh come on guys it's an algebra question.
(a) Plane's speed + wind = 4200 / 3 = 1400
(b) Plane's speed - wind = 4200 / 4 = 1050
subtract (b) from (a)
2 * wind = 1400 - 1050 = 350
wind = 175
back to (a)
plane's speed + wind = plane's speed + 175 = 4200 / 3 = 1400
plane's speed = 1400 - 175 = 1225
C
Yes we can say that the drag force would be proportional to the velocity, that planes don't actually go straight, but in great circles, that the drag would decrease as altitude increases, and get a not-so-nice differential equation. But the guy did want an answer.
Oh, and don't forget relativity!
Last edited by rlbond86; 01-15-2006 at 01:33 PM..
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