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A neighbor pushes a lawn mower on a lawn that is level with a force of 230 Newtons. If 45% of this force is directed downward, how much work is done by the neighbor in pushing the mower 8 meters?

  • physics -

    The force directed horizontally is not the remaining 55%, it is
    sqrt[1 - (0.45)^2] = 89.3%,
    which amounts to 205.4 Newtons.
    Multiply that by 8 meters for the work done.

    Note that Fx^2 + Fy^2 = Ftotal^2

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