previous Alternative Exercise 3.128 City A lies directly west of city B. When th

Question

previous Alternative Exercise 3.128 City A lies directly west of city B. When there is no wind, an airliner makes the round trip flight of distance s between them in a flight time of t1 while traveling at the same speed in both directions. When a strong, steady wind is blowing from west to east and the airliner has the same air speed as before, the round trip takes a flight time of t2. Part A How fast is the wind blowing? (1- t1) 2. s km/h Submit My Answers Give Up incorrect; Try Again; 3 attempts remaining previous l o ol l l ment Provide Feedback Continue

Explanation / Answer

s/(V - W) + s/(V+W) = t2

s/(2s/t1 - W) + s/(2s/t1 +W) = t2

Solving simultaneously,

W = (2s/t1)*sqrt[(t2-t1)/t2]

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