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A lawn mower is pushed a distance of 100 ft. along a horizontal path by a constant force of 60 lbs. The handle of the lawn mower is held at a downward angle of 45 degrees toward the horizontal. Explain what each value listed in this situation represents in relation to the formula W=F*PQ=llFll*lPQl cos theta. Then find the work done pushing the lawn mower.

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  1. work = Force * distance in direction of force
    = Force vector dot Distance vector
    = |F| |D| cos angle between the two vectors
    = 60 * 100 * sqrt 2 / 2

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