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How much work would a child do while puling a 12-kg wagon a distance of 3m with a 22 n force directed 30 degrees with respect to the horizontal? (a) 82j (b) 52j (c) 109j (d) 95j

Which best represents the law of conservation of mass ?

Alfred pushes on a heavy box, but cannot move it. the box has a lot of inertia motion friction gravity