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    joneassam's Avatar
    joneassam Posts: 2, Reputation: 1
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    #1

    Jan 29, 2012, 11:57 PM
    Finding The Resultant Vector
    A plane is flying southeast at 215 km/h. Suddenly there is a wind from the north at 75 km/h. What is the plane's new velocity with respect to the ground in standard position?
    Aurora2000's Avatar
    Aurora2000 Posts: 111, Reputation: 16
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    #2

    Jan 30, 2012, 02:04 AM
    Impose a coordinate system where positive x axis direction is east, positive y axis is north, negative x axis is west and negative y axis is south: plane's velocity is directed southeast (i.e. along the bisector of the IV quadrant), while wind blows from north to south: you have that the angle between these 2 velocity vectors is 45 degrees, so sum these vectors.
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