Classifying Energy

Front

What is mechanical energy?

Back

Mechanical energy is the sum of potential energy and kinetic energy in an object that is used to do work.

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What is kinetic energy?

Back

Kinetic energy is the energy of motion, which depends on the mass and velocity of an object.

Front

What is potential energy?

Back

Potential energy is the stored energy in an object due to its position or state.

Front

What is gravitational potential energy?

Back

Gravitational potential energy is the energy an object possesses because of its height above the ground, calculated as mass x gravity x height.

Front

What is the work-energy principle?

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The work-energy principle states that the work done on an object is equal to the change in its kinetic energy.

Front

What is the law of conservation of energy?

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The law of conservation of energy states that energy cannot be created or destroyed, only transformed from one form to another.

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What is friction?

Back

Friction is a force that opposes the relative motion of two surfaces in contact.

Front

How does friction affect mechanical energy?

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Friction reduces mechanical energy by converting it into thermal energy, which is not useful for doing work.

Front

What is non-mechanical energy?

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Non-mechanical energy refers to forms of energy that do not involve the motion or position of objects, such as thermal energy, chemical energy, and electrical energy.

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What is an example of mechanical energy?

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Examples of mechanical energy include a moving car, a bouncing ball, or a person riding a bicycle.