Work done by friction _.
Correct answer: C. Can be negative
- A. Can be zero
- B. Can be positive
- C. Can be negative
- D. All of these options are correct
Explanation
Work done by friction is always negative.
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About Work
Work is done when a force produces displacement, with its value determined by the component of force along the displacement. The topic covers positive, negative and zero work, work by variable forces from force-displacement graphs, and the connection between net work and change in kinetic energy.
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