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A child is pulling a wagon down the sidewalk. For 9.0 m the wagon stays on the sidewalk and the child pulls with a horizontal force of 23 N . Then one wheel of the wagon goes off on the grass so the child has to pull with a force of 38 N at an angle of 13 to the side for the next 5.5 m . Finally the wagon gets back on the sidewalk so the child makes the rest of the trip, 13.0 m , with a force of 23 N .
How much total work did the child do on the wagon?
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