Work Done is there force causing motion x the distance moved.

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What is the work done against when lifting a box ?

Gravitational Potential energy.

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What is the final energy form after stretching a spring ?

Elastic Potential energy.

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What is the unit for work done ?

Measured in Joules.

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Is work in all cases the total energy ?

No work done isn't always the total energy.

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What is the definition of a Joule ?

One Joule is the work done when a force of 1 Newton moves an object through a distance of 1 metre.

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What is the definition of Power ?

The rate of doing work

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What is the definition of the Watt ?

The rate of energy transferred equal to 1 Joule per second

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What is Power measured in ?

Watts/W

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What is Kinetic Energy ?

The energy an object has due to its movement.

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What is the equation for Kinetic Energy ?

1/2 m v^2

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What is Gravitational Potential Energy ?

Is the energy an object has due to its position in a gravitational field.

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What is the equation for Gravitational Potential Energy ?

mgh

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What is the Principle of conservation of energy ?

Energy cannot be created or destroyed. Energy can be transferred from one form to another but the total amount of energy in a closed system will not change.

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Name the main way energy is lost in a system ?

Heat energy

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What is the simple energy rule in a ideal system ?

Total energy in = Total energy out

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What is Efficiency ?

Efficiency is the ratio of useful energy output to Total Energy Input.

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Other cards in this set

Card 2

Front

What is the work done against when lifting a box ?

Back

Gravitational Potential energy.

Card 3

Front

What is the final energy form after stretching a spring ?

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