# Hans Full is pulling on a rope to drag his backpack to school across the ice. He pulls upwards and rightwards with a force of 22.9 Newtons at an angle of 35 degrees above the horizontal to drag his backpack a horizontal distance of 129 meters to the right. Determine the work (in Joules) done upon the backpack."

**Work done:**

$W=Fs\mathrm{cos}\theta \phantom{\rule{0ex}{0ex}}=22.9\times 129\times \mathrm{cos}35\phantom{\rule{0ex}{0ex}}=2419.9\mathrm{J}$

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