Kinetic and Potential Energy

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What is Kinetic Energy?

Back

Kinetic Energy is the energy an object possesses due to its motion. It depends on the mass of the object and the square of its velocity.

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What is Potential Energy?

Back

Potential Energy is the stored energy in an object due to its position or state. It is often associated with gravitational energy when an object is elevated.

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What is Gravitational Potential Energy?

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Gravitational Potential Energy is the energy an object has due to its height above the ground, calculated as PE = mgh (mass x gravity x height).

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What factors affect Gravitational Potential Energy?

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Gravitational Potential Energy depends on the height and mass of the object.

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What is the formula for Kinetic Energy?

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The formula for Kinetic Energy is KE = 1/2 mv² (where m is mass and v is velocity).

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How does height affect Potential Energy?

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As the height of an object increases, its Potential Energy increases because it has the potential to do more work due to gravity.

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What happens to Kinetic Energy when an object speeds up?

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When an object speeds up, its Kinetic Energy increases because it is proportional to the square of its velocity.

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What is the relationship between Kinetic and Potential Energy in a closed system?

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In a closed system, the total energy (Kinetic + Potential) remains constant, demonstrating the principle of conservation of energy.

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At what point is Kinetic Energy greatest in a falling object?

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Kinetic Energy is greatest just before the object hits the ground, as it has converted most of its Potential Energy into Kinetic Energy.

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What is an example of an object with Potential Energy?

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An example of an object with Potential Energy is a book placed on a shelf, as it has the potential to fall due to gravity.