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Q: The work done by the force is positive when
  • A. Displacement occurs in the direction of force
  • B. Displacement is perpendicular to the force
  • C. There is no displacement due to the force
  • D. Displacement occurs in opposite direction of force
Correct Answer: Option A - Positive Work–When force and displacement are in the same direction, the work performed on an object is said to be positive work. Negative Work–Negative work is performed if the displacement is opposite to the direction of the force applied. Zero Work–When force and displacement are perpendicular to each other, or when force or displacement is zero then there will be no work done.
A. Positive Work–When force and displacement are in the same direction, the work performed on an object is said to be positive work. Negative Work–Negative work is performed if the displacement is opposite to the direction of the force applied. Zero Work–When force and displacement are perpendicular to each other, or when force or displacement is zero then there will be no work done.

Explanations:

Positive Work–When force and displacement are in the same direction, the work performed on an object is said to be positive work. Negative Work–Negative work is performed if the displacement is opposite to the direction of the force applied. Zero Work–When force and displacement are perpendicular to each other, or when force or displacement is zero then there will be no work done.