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1) A 10kg box slides down a frictionless, 50cm-high ramp at an angle of 20 - 7/9, starting at the top from rest. A horizontal

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1) A 10kg box slides down a frictionless, 50cm-high ramp at an angle of 20 - 7/9, starting at the top from rest. A horizontal force pushes against the box. At the bottom of the ramp, the box has a speed of 2". What is the magnitude of the force? Solve using an energy-work approach. Remember what 0 represents in the equation W = FAr cos 0. (5 points) F push 10 kg 50 cm

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