Anonymous asked in Science & MathematicsPhysics · 5 years ago

A plane heads south with air speed 1000k/h. its ground speed = 1100 k/h at 15 degree east south. what is the wind speed?

2 Answers

  • 5 years ago
    Favorite Answer


    this is a vector subtraction

    Draw the two given vectors

    then connect the ends

    and find the magnitude and direction of the connector

    I'll use my calculator

    the ground speed is the sum of air speed and wind speed

    so the wind speed is ground speed - air speed

    taking S as 0° just for convenience

    (1100 , 15°) - (1000 , 0°) = 291.5 , 77.6°

    that's a wind of 291.5 k/h at 77.6° east of south

    or 291.5 k/h at 12.4° south of east

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  • Anonymous
    5 years ago


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