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Questions and Answers
What type of work does the gravitational force do on a ball as it falls?
What type of work does the gravitational force do on a ball as it falls?
- No work
- Negative work
- Variable work
- Positive work (correct)
What is the equation for work in its simplest form for a constant force aligned with the direction of motion?
What is the equation for work in its simplest form for a constant force aligned with the direction of motion?
- $W = F + d$
- $W = F \cdot d$ (correct)
- $W = F - d$
- $W = \frac{F}{d}$
When does a force do positive work?
When does a force do positive work?
- When it has a component opposite to the displacement
- When it has no component in the direction of the displacement
- When it has a component perpendicular to the displacement
- When it has a component in the direction of the displacement (correct)
If a ball is thrown upwards, what type of work does the gravitational force do?
If a ball is thrown upwards, what type of work does the gravitational force do?
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What happens when a force is applied opposite to the direction of displacement?
What happens when a force is applied opposite to the direction of displacement?
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