Potential and Kinetic Energy Review

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What is potential energy?

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Potential energy is the energy stored in an object due to its position or state. It has the potential to be converted into kinetic energy.

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What is kinetic energy?

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

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How is potential energy converted into kinetic energy in a roller coaster?

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As a roller coaster descends from a height, its potential energy decreases while its kinetic energy increases, resulting in faster motion.

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What happens to kinetic energy as a roller coaster climbs a hill?

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As the roller coaster climbs a hill, its kinetic energy decreases while its potential energy increases.

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What is the relationship between potential energy and height?

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Potential energy increases with height; the higher an object is, the more potential energy it has.

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What is the formula for kinetic energy?

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The formula for kinetic energy (KE) is KE = 1/2 mv², where m is mass and v is velocity.

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What is the formula for potential energy?

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The formula for potential energy (PE) is PE = mgh, where m is mass, g is the acceleration due to gravity, and h is height.

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What is mechanical energy?

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Mechanical energy is the sum of potential energy and kinetic energy in an object.

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How does energy conservation apply to roller coasters?

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In a closed system, the total mechanical energy (potential + kinetic) remains constant, meaning energy is transformed but not lost.

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What is an example of potential energy?

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A book on a shelf has potential energy due to its height above the ground.

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