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physics

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a man walks 10 meters in a direction of 20 degrees North of East, then 20 meters in a direction due west. What is his total displacement vector in component form

  • physics - ,

    break this problem down to horizontal (x) and vertical (y) components! it'll probably help if you drew the problem out!

    horizontal:
    (10cos20) meters
    20 meters
    add the horizontal components together

    vertical:
    (10sin20) meters

    perform Pythagorean theorem-
    total displacement: sqrt[(horizontal)^2+(vertical)^2]

    remember displacement is a vector so it also has direction! to find direction: tan^-1(vertical/horizontal)

  • physics (correction) - ,

    opps! I forgot to put a negative in front of -20 meters under the horizontal component.

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