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Questions and Answers
What is the formula for work when the force and displacement vectors are constant?
What is the formula for work when the force and displacement vectors are constant?
- $W = |F||s|\cos(\theta)$ (correct)
- $W = |F||s|\sin(\theta)$
- $W = |F| + |s| + \theta$
- $W = |F| - |s| - \theta$
When does a force do negative work?
When does a force do negative work?
- When it has a component in the same direction as the displacement at the point of application
- When it has no component in the direction of the displacement at the point of application
- When it has a variable magnitude
- When it has a component opposite to the direction of the displacement at the point of application (correct)
What is the SI unit of work?
What is the SI unit of work?
- Newton (N)
- Coulomb (C)
- Watt (W)
- Joule (J) (correct)
What happens to energy during work?
What happens to energy during work?
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Is work a scalar or vector quantity?
Is work a scalar or vector quantity?
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