Podcast
Play an AI-generated podcast conversation about this lesson
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 from an object via the application of force perpendicular to a displacement.
- Work is the energy transferred to an object via the application of force along a displacement. (correct)
- Work is the energy transferred from an object via the application of force along a displacement.
- Work is the energy transferred to an object via the application of force perpendicular to a displacement.
When does a force do positive work?
When does a force do positive work?
- When it has a component parallel to the direction of the displacement.
- When it has a component opposite to the direction of the displacement.
- When it has a component perpendicular to the direction of the displacement.
- When it has a component in the direction of the displacement. (correct)
When does a force do negative work?
When does a force do negative work?
- When it has a component opposite to the direction of the displacement. (correct)
- When it has a component perpendicular to the direction of the displacement.
- When it has a component in the direction of the displacement.
- When it has a component parallel to the direction of 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?
Signup and view all the answers
What is the work done by the gravitational force on a ball when it is thrown upwards?
What is the work done by the gravitational force on a ball when it is thrown upwards?
Signup and view all the answers
