Physics Potential and Kinetic Energy Quiz

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Questions and Answers

Which of the following best describes potential energy?

  • Energy in motion.
  • Energy directly related to an object's speed.
  • Energy stored within a system or due to its position. (correct)
  • Energy transferred through heat.

What factor, in the context of gravitational potential energy, is NOT directly proportional to its value?

  • The object's velocity. (correct)
  • Mass of the object.
  • Acceleration caused by gravity.
  • Height of the object above the reference point.

If a glass bottle is placed on a table, what form of energy does it possess relative to the floor?

  • Neither kinetic nor potential.
  • Potential energy only. (correct)
  • Both kinetic and potential energy.
  • Kinetic energy only.

Which scenario would demonstrate a significant increase in an object's gravitational potential energy?

<p>Lifting the object to a greater height. (D)</p> Signup and view all the answers

Based on the description, how does increasing the height affect gravitational potential energy, assuming mass is constant?

<p>Increases the potential energy linearly. (A)</p> Signup and view all the answers

Which of the following scenarios demonstrates potential energy?

<p>A stretched rubber band. (A)</p> Signup and view all the answers

What happens to the potential energy of a ball as it falls towards the ground?

<p>It is converted into kinetic energy. (D)</p> Signup and view all the answers

According to the content, what is the relationship between kinetic energy and velocity?

<p>Kinetic energy is directly proportional to the square of its velocity. (B)</p> Signup and view all the answers

If a mass is measured in kilograms and velocity in meters per second, what unit is kinetic energy measured in?

<p>Joules. (C)</p> Signup and view all the answers

Which of the following is an example of kinetic energy?

<p>Storm winds. (B)</p> Signup and view all the answers

Flashcards

Potential Energy

The energy stored in an object due to its position or height above the ground.

Kinetic Energy

The energy of an object in motion, dependent on its mass and speed.

Gravitational Force

The force that attracts two bodies toward each other; depends on mass and distance.

Formula for Potential Energy

Potential energy (PE) = mass (m) × gravitational acceleration (g) × height (h).

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Formula for Kinetic Energy

Kinetic energy (KE) = 1/2 × mass (m) × velocity² (v²).

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Examples of Potential Energy

Common examples include stretched springs, balls at height, and elastic materials.

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Kinetic Energy Formula

Kinetic energy (KE) is calculated as KE = 1/2 mv², where m is mass and v is velocity.

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Elastic Potential Energy

Energy stored in elastic materials when they are stretched or compressed.

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