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12) Using the same information in the above problem, Bob is moving a 15 kg box...

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12) Using the same information in the above problem, Bob is moving a 15 kg box along a horizontal floor, by pushing down on t
12) Using the same information in the above problem, Bob is moving a 15 kg box along a horizontal floor, by pushing down on the box at an angle = 30° below the horizontal with a force of|F1 = 80 N and there is a frictional force of 50 N acting on the box as he pushes. Calculate the magnitude of the normal force acting on the box? 13) Mike weights 900 N (mMiko = 91.8 kg), he goes sky diving, he jumps out of an airplane and after 3 seconds of falling he experiences a drag force of |F | = 600 N, what is the magnitude of Mike's acceleration?

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