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Questions and Answers
What is the formula for work done?
What is the formula for work done?
- Energy $\div$ power
- Velocity $\div$ time
- Mass $\times$ acceleration
- Force $\times$ distance (correct)
Which of the following is a unit of energy?
Which of the following is a unit of energy?
- Pascal
- Watt
- Joule (correct)
- Newton
What is the relationship between work and energy?
What is the relationship between work and energy?
- Work is the potential energy of an object
- Work is the rate of doing work over time
- Energy is the force applied to an object
- Energy is the ability to do work (correct)
Which of the following represents the amount of work done on an object?
Which of the following represents the amount of work done on an object?
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What is the relationship between work and kinetic energy?
What is the relationship between work and kinetic energy?
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What is the unit of power?
What is the unit of power?
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Study Notes
Work, Energy, and Power
- The formula for work done is W = F × d, where W is work, F is force, and d is displacement.
- Units of energy include Joules (J) and Kilojoules (kJ).
- Work and energy are equivalent, as work done on an object increases its energy.
- The amount of work done on an object is represented by the symbol W and is measured in Joules (J).
- The relationship between work and kinetic energy is described by the work-energy theorem, which states that the net work done on an object is equal to its change in kinetic energy.
- The unit of power is the Watt (W), where 1 Watt is equal to 1 Joule per second (1 W = 1 J/s).
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