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math

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You have the following data: A plane flying at its maximum speed can go 190 miles per hour with a tailwind or 150 miles per hour into a headwind.
(a) What is the wind speed?

  • math - ,

    Vp + Vw = 190
    Vp - Vw = 150
    Subtract the Eqs:
    0 + 2Vw = 40
    Vw = 20 mi/h.

    Alternate Method:
    Vw = (Vmax-Vmin)/2=(190-150) / 2=20 mi/h

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