Potential and Kinetic Energy Review

Front

What is kinetic energy and how is it calculated?

Back

Kinetic energy is the energy of an object in motion, calculated using the formula KE = 1/2 mv², where m is the mass in kilograms and v is the velocity in meters per second.

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Front

What is potential energy and how is it calculated?

Back

Potential energy is the stored energy of an object due to its position or state, calculated using the formula PE = mgh, where m is the mass in kilograms, g is the acceleration due to gravity (9.81 m/s²), and h is the height in meters.

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Front

What is the Law of Conservation of Energy?

Back

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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Front

At which point in a pendulum's swing is kinetic energy the greatest?

Back

Kinetic energy is greatest at the lowest point of the pendulum's swing.

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Front

At which point in a pendulum's swing is potential energy the greatest?

Back

Potential energy is greatest at the highest points of the pendulum's swing.

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Front

How does mass affect kinetic energy?

Back

Kinetic energy is directly proportional to the mass of the object; as mass increases, kinetic energy increases if velocity remains constant.

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Front

How does velocity affect kinetic energy?

Back

Kinetic energy is proportional to the square of the velocity; as velocity increases, kinetic energy increases exponentially.

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Front

What is gravitational potential energy?

Back

Gravitational potential energy is the potential energy an object possesses due to its height above the ground, calculated using the formula PE = mgh.

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Front

What happens to the total mechanical energy in a closed system?

Back

In a closed system, the total mechanical energy (the sum of potential and kinetic energy) remains constant, assuming no external forces do work.

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Front

What is the relationship between potential energy and kinetic energy in a roller coaster?

Back

As a roller coaster ascends, potential energy increases and kinetic energy decreases; as it descends, potential energy decreases and kinetic energy increases.

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