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physics

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A student bikes to school by traveling first d_N = 0.900\rm {miles} north, then d_W = 0.600\rm {miles} west, and finally d_S = 0.100\rm {miles} south.

  • physics -

    If a bird were to start out from the origin (where the student starts) and fly directly (in a straight line) to the school, what distance d_b would the bird cover?

  • physics -

    north .9 - .1 = .8
    west .6

    right triangle beacuse north is perpendicular to west

    c^2 = a^2 + b^2
    c^2 = .8^2 + .6^2

    3,4 ,5 triangle = 2 (.3 , .4 , .5)
    so answer is 1

    or do it out
    .8^2 = .64
    .6^2 = .36
    sum is 1
    sqrt (1) = 1

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