Engineering Physics

A dog searching for a bone walks 3.5 m south, then 8.20 m at an angle 30.0 north of east, and finally 15.0 m west. Using graphical techniques, find the dogs resultant displacement vector.

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  1. 8.2 at NE = 5.8N and 5.8E

    (0,-3.5)+(5.8,5.8)+(-15,0) = (-9.2,2.3)

    (a) sqrt(9.2^2 + 2.3^2) = 9.48
    (b) arctan(2.3/-9.2) = 166 deg

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