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Flashcards on Work, Energy, and Power
Click on the flashcard to see the answer
What is work?
Work is the transfer of energy that occurs when a force is applied to an object and the object moves in the direction of the force.
What is energy?
Energy is the ability to do work or cause change.
What is power?
Power is the rate at which work is done or the amount of work done in a given amount of time.
What is the formula for work?
Work = Force x Distance
What is the SI unit of work?
Joule (J)
What is the formula for gravitational potential energy?
Potential energy = Mass x Gravity x Height
What is the SI unit of energy?
Joule (J)
What is the formula for power?
Power = Work/Time
What is the SI unit of power?
Watt (W)
What is the relationship between work and energy?
Work is the transfer of energy.
What is the relationship between power and energy?
Power is the rate at which energy is transferred or the amount of energy transferred per unit time.
What happens to the amount of work done if the distance is doubled?
The amount of work done doubles.
Which form of energy is associated with an object in motion?
Kinetic energy
What is the relationship between work and power?
Power is the rate at which work is done.
What is the unit of power equivalent to 1 joule of work done per second?
Watt (W)
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Test Your Knowledge
Which of the following is the SI unit of power?
Kilogram (kg)
Meter per second (m/s)
Watt (W)
Newton (N)
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What is the formula for work?
Work = Mass x Acceleration
Work = Force x Velocity
Work = Force x Distance
Work = Power x Time
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Which form of energy is associated with an object at rest?
Thermal energy
Sound energy
Potential energy
Kinetic energy
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What is the relationship between power and time?
Power is directly proportional to time.
Power is inversely proportional to time.
Power is independent of time.
Power is equal to time.
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What is the unit of energy?
Meter per second (m/s)
Kilogram (kg)
Joule (J)
Newton (N)
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Which of the following is true about the conservation of energy?
Energy cannot be created or destroyed, but it can be transformed from one form to another.
Energy can be created or destroyed.
Energy can only be transformed into potential energy.
Energy can only be transformed into kinetic energy.
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What is the relationship between work and distance?
Work is directly proportional to distance.
Work is inversely proportional to distance.
Work is independent of distance.
Work is equal to distance.
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What happens to the amount of power if the work is doubled and the time remains the same?
The power is halved.
The power is tripled.
The power is doubled.
The power remains the same.
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Which of the following is an example of potential energy?
A moving car
A stretched rubber band
A spinning top
A running person
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What is the relationship between work and power?
Power is the rate at which work is done.
Work is the rate at which power is transferred.
Work and power are independent of each other.
Work and power are equal to each other.
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