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Please help with 1-3 1. T/F Kinetic energy is ALWAYS greater than zero. 2. T/F Kinetic friction can NEVER do positive work 3. T/F The

Please help with 1-3

1. T/F Kinetic energy is ALWAYS greater than zero. 2. T/F Kinetic friction can NEVER do positive work 3. T/F The normal force can do negative work 4. T/F If a potential energy function governs the int

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