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Questions and Answers
Which of the following statements about work in physics is correct?
Which of the following statements about work in physics is correct?
- Work is the energy transferred to an object via the application of force at an angle to the displacement.
- Work is the energy transferred to an object via the application of force along the displacement. (correct)
- Work is the energy transferred to an object via the application of force in the opposite direction of the displacement.
- Work is the energy transferred to an object via the application of force perpendicular to the displacement.
When does a force do positive work?
When does a force do positive work?
- When the force is applied in the opposite direction of the displacement.
- When the force is applied at an angle to the displacement.
- When the force is applied perpendicular to the displacement.
- When the force is applied in the same direction as the displacement. (correct)
When does a force do negative work?
When does a force do negative work?
- When the force is applied at an angle to the displacement.
- When the force is applied in the same direction as the displacement.
- When the force is applied in the opposite direction of the displacement. (correct)
- When the force is applied perpendicular to the displacement.
What is the work done by the gravitational force on a ball as it falls?
What is the work done by the gravitational force on a ball as it falls?
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What is the work done by the gravitational force on a ball thrown upwards?
What is the work done by the gravitational force on a ball thrown upwards?
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