science
posted by Barbara .
Mr.wilinson carried his backpack 12kilometers and set up camp on the edge of cutthroat lake it took him 3 hours to get there from the trailhead how much work did he do on his backpack on the hike in?(1pound=453.7grams=4.1newtons)EXPAIN

How much work is done when a 1 kilogram mass is raised a vertical distance of 1 meter?
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