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Questions and Answers
When does a force do positive work?
When does a force do positive work?
- When it is perpendicular to the displacement
- When it has a component in the direction of the displacement (correct)
- When it is applied to a stationary object
- When it has a component opposite to the displacement
What is work in physics?
What is work in physics?
- The energy transferred to or from an object via the application of force along a displacement (correct)
- The distance an object travels when a force is applied
- The energy stored in an object when a force is applied
- The force exerted on an object
What happens when a force does negative work?
What happens when a force does negative work?
- It is perpendicular to the displacement
- It has a component in the direction of the displacement
- It doesn't affect the displacement
- It has a component opposite to the direction of the displacement (correct)
In the example of a ball being held above the ground and then dropped, what is the work done by the gravitational force as it falls?
In the example of a ball being held above the ground and then dropped, what is the work done by the gravitational force as it falls?
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What does work in physics depend on?
What does work in physics depend on?
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