What is the definition of kinetic energy?
Energy, Work and Power

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Physics
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9th - 12th Grade
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1.
FLASHCARD QUESTION
Front
Back
Kinetic energy is the energy that an object possesses due to its motion, calculated as KE = 1/2 mv², where m is mass and v is velocity.
2.
FLASHCARD QUESTION
Front
How is work defined in physics?
Back
Work is defined as the energy transferred to or from an object via the application of force along a displacement, calculated as Work = Force x Distance.
3.
FLASHCARD QUESTION
Front
What is the formula for calculating power?
Back
Power is defined as the rate at which work is done or energy is transferred, calculated as Power = Work / Time.
4.
FLASHCARD QUESTION
Front
What is the unit of power in the International System of Units (SI)?
Back
The unit of power in the SI system is the Watt (W), which is equivalent to one joule per second.
5.
FLASHCARD QUESTION
Front
How much energy does a 75W light bulb consume in 1 hour?
Back
A 75W light bulb consumes 270,000 joules (or 270 kJ) in 1 hour, calculated as Energy = Power x Time = 75W x 3600s.
6.
FLASHCARD QUESTION
Front
What happens to kinetic energy if the velocity of an object is doubled?
Back
If the velocity of an object is doubled, its kinetic energy increases by a factor of four, since KE = 1/2 mv².
7.
FLASHCARD QUESTION
Front
What is the relationship between work and energy?
Back
Work is a means of transferring energy from one system to another; when work is done on an object, energy is transferred to that object.
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