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March 28, 2017

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VECTOR A has a magnitude of 55. Ax is 26. What are the two possibilities for Ay?

  • PHY - ,

    well, A can point in the +x,+y direction, or +x,-y direction.

    The angle between A and the x axis will be

    theta=arccos 26/55

    and Ay= +-55sinTheta

  • PHY - ,

    (26)^2 + Y^2 = (55)^2
    676 + Y^2 = 3025
    Y^2 = 3025 - 676 = 2349,
    Y = +- 48.47.

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