CHAPTER 5. Energy

Front

What is potential energy?

Back

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

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At which point is the potential energy of a roller coaster at its maximum?

Back

The potential energy of the roller coaster is at its maximum at point 1.

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What is kinetic energy?

Back

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

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Front

At which points are kinetic energy and potential energy equal in a roller coaster?

Back

Kinetic energy and potential energy are equal at points B and D.

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Front

What role does friction play in the motion of a roller coaster?

Back

Friction opposes the motion of the roller coaster, preventing it from going higher than certain points.

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Front

At which point is kinetic energy the highest in a roller coaster?

Back

Kinetic energy is the highest at point C.

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Front

What factors can prevent a roller coaster from going higher than a certain point?

Back

Factors that can prevent a roller coaster from going higher include friction, gravitational force, and the initial energy provided to the coaster.

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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

How does gravitational potential energy change as a roller coaster descends?

Back

As a roller coaster descends, its gravitational potential energy decreases while its kinetic energy increases.

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Front

What is the relationship between potential energy and height?

Back

Potential energy is directly proportional to height; as height increases, potential energy increases.