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What does negative work indicate in the context of classical mechanics?
What does negative work indicate in the context of classical mechanics?
- The force is tending to speed up the object
- The direction of the force
- The force is balanced
- The force is tending to slow the object down (correct)
Which of the following is an example of negative work being done?
Which of the following is an example of negative work being done?
- Moving a heavy object upwards
- Someone pushes you (correct)
- Lifting a box on a table
- Pushing a car up a hill
What is the relationship between work and change in kinetic energy according to the work-energy theorem?
What is the relationship between work and change in kinetic energy according to the work-energy theorem?
- Work and change in kinetic energy are unrelated
- Kinetic energy affects the amount of work done
- When work is done on an object, there will be no change in kinetic energy
- When work is done on an object, there will be a change in kinetic energy (correct)
What is the unit of energy used for measuring energy?
What is the unit of energy used for measuring energy?
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In the context of classical mechanics, when does negative work occur?
In the context of classical mechanics, when does negative work occur?
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What does the work-energy theorem state?
What does the work-energy theorem state?
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What is the formula for power in the mks system of units?
What is the formula for power in the mks system of units?
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What is the unit of power in the mks system of units?
What is the unit of power in the mks system of units?
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How many watts are in a kilowatt?
How many watts are in a kilowatt?
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In the British system of units, power is measured in:
In the British system of units, power is measured in:
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If a force of 20 N pushes an object a distance of 5 m, how much work is done?
If a force of 20 N pushes an object a distance of 5 m, how much work is done?
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If 500 J of work is done in 10 s, what is the power?
If 500 J of work is done in 10 s, what is the power?
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