Gr 10 Physical Sciences Ch 17: Potential energy
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Questions and Answers

What is the unit symbol of gravitational potential energy?

  • J (correct)
  • N
  • kg
  • m/s²

Which of the following is not a type of potential energy?

  • Kinetic potential energy (correct)
  • Chemical potential energy
  • Electrical potential energy
  • Gravitational potential energy

What is the energy an object has due to its position in a gravitational field relative to some reference point?

  • Electrical potential energy
  • Gravitational potential energy (correct)
  • Chemical potential energy
  • Kinetic energy

What is the formula to calculate gravitational potential energy?

<p>E_P = mgh (C)</p> Signup and view all the answers

What happens to an object's gravitational potential energy when it is lifted?

<p>It increases (A)</p> Signup and view all the answers

What is the gravitational acceleration on Earth?

<p>9.8 m/s² (B)</p> Signup and view all the answers

What happens to an object's gravitational potential energy as it falls from a height?

<p>It decreases (A)</p> Signup and view all the answers

What is the definition of potential energy?

<p>The energy an object has due to its position or state (B)</p> Signup and view all the answers

What is potential energy?

<p>A form of stored energy due to an object's position or state (D)</p> Signup and view all the answers

What factors does gravitational potential energy depend on?

<p>An object's mass, height, and gravitational field (A)</p> Signup and view all the answers

What happens to the potential energy of an object as it falls?

<p>It decreases with height and increases as the object descends (A)</p> Signup and view all the answers

What is the potential energy of the suitcase when it reaches the floor?

<p>0 J (B)</p> Signup and view all the answers

What happens to the gravitational potential energy of an object as it reaches the reference point?

<p>It becomes zero (D)</p> Signup and view all the answers

What is the significance of the maximum height in relation to gravitational potential energy?

<p>It is the point where the object's potential energy is highest (A)</p> Signup and view all the answers

What is the main reason why an object gains potential energy when it is lifted?

<p>Because of the work done against the gravitational force (D)</p> Signup and view all the answers

What is the effect of increasing the mass of an object on its gravitational potential energy?

<p>It increases (D)</p> Signup and view all the answers

What is the relationship between the height of an object and its gravitational potential energy?

<p>Gravitational potential energy is directly proportional to the height (B)</p> Signup and view all the answers

What happens to the gravitational potential energy of an object as it moves from a higher to a lower position in a gravitational field?

<p>It decreases (A)</p> Signup and view all the answers

Which of the following types of energy is converted into kinetic energy when an object falls from a height?

<p>Gravitational potential energy (B)</p> Signup and view all the answers

What is the significance of the reference point in the context of gravitational potential energy?

<p>It is the point where the gravitational potential energy is zero (D)</p> Signup and view all the answers

What is the relationship between the gravitational acceleration and the gravitational potential energy of an object?

<p>Gravitational potential energy is directly proportional to the gravitational acceleration (C)</p> Signup and view all the answers

What is the main characteristic of gravitational potential energy?

<p>It is a type of energy that is stored and can be converted into other forms (A)</p> Signup and view all the answers

What is the primary reason why an object's gravitational potential energy increases with height?

<p>Because the object's position in the gravitational field is changed (D)</p> Signup and view all the answers

What can be inferred about an object's energy at the reference point?

<p>It has zero gravitational potential energy (C)</p> Signup and view all the answers

What is a characteristic of the gravitational potential energy of an object?

<p>It depends on the object's mass and height (B)</p> Signup and view all the answers

What happens to the energy of an object as it falls from a height?

<p>It is converted from one form to another (C)</p> Signup and view all the answers

What is the significance of the reference point in relation to gravitational potential energy?

<p>It is the point where the object has zero potential energy (C)</p> Signup and view all the answers

What can be said about the energy of an object at its maximum height?

<p>It is entirely potential energy (D)</p> Signup and view all the answers

What is the primary source of energy that is converted into kinetic energy when an object falls from a height?

<p>Gravitational potential energy (B)</p> Signup and view all the answers

An object is lifted from the ground to a height of 10 meters. What happens to its gravitational potential energy?

<p>It increases (A)</p> Signup and view all the answers

Which of the following is a correct statement about gravitational potential energy?

<p>It depends on the object's mass and height (C)</p> Signup and view all the answers

What is the significance of the reference point in the context of gravitational potential energy?

<p>It is the point where the object has zero potential energy (D)</p> Signup and view all the answers

What happens to the gravitational potential energy of an object as it moves from a higher to a lower position in a gravitational field?

<p>It decreases (A)</p> Signup and view all the answers

Which of the following is a correct statement about the relationship between gravitational potential energy and kinetic energy?

<p>Kinetic energy is converted into gravitational potential energy when an object falls (C)</p> Signup and view all the answers

What is the significance of the mass of an object in the context of gravitational potential energy?

<p>It increases gravitational potential energy (C)</p> Signup and view all the answers

What is the relationship between the height of an object and its gravitational potential energy?

<p>They are directly proportional (A)</p> Signup and view all the answers

At what point does an object's gravitational potential energy become zero?

<p>At the reference point (A)</p> Signup and view all the answers

What happens to the gravitational potential energy of an object as it moves from a lower to a higher position in a gravitational field?

<p>It increases (B)</p> Signup and view all the answers

What is the primary reason why an object's gravitational potential energy is highest at the maximum height?

<p>Due to its maximum height (C)</p> Signup and view all the answers

What is the relationship between an object's mass and its gravitational potential energy?

<p>They are directly proportional (C)</p> Signup and view all the answers

What happens to the energy of an object as it falls from a height if there is no air resistance?

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

What is the significance of the reference point in the context of gravitational potential energy?

<p>It is the point where the object's potential energy is zero (D)</p> Signup and view all the answers

What happens to the energy of an object as it falls from a height, assuming no air resistance?

<p>It is converted into kinetic energy and other forms of energy. (C)</p> Signup and view all the answers

Why does an object's potential energy decrease as it falls?

<p>Because its height above the reference point decreases. (B)</p> Signup and view all the answers

What is the primary reason why an object's gravitational potential energy is highest at the maximum height?

<p>Because of its maximum height above the reference point. (D)</p> Signup and view all the answers

What happens to an object's gravitational potential energy when it is at the reference point?

<p>It becomes zero. (C)</p> Signup and view all the answers

What is the relationship between an object's height and its potential energy?

<p>As the height increases, the potential energy increases. (B)</p> Signup and view all the answers

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