Physics Chapter - Potential and Kinetic Energy
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Questions and Answers

What is defined as the energy stored in an object due to work done on it?

  • Thermal Energy
  • Potential Energy (correct)
  • Kinetic Energy
  • Total Energy

    • Which type of potential energy is associated with an object's height and weight?

  • Elastic Potential Energy
  • Gravitational Potential Energy (correct)
  • Thermal Potential Energy
  • Chemical Potential Energy

    • What equation represents the potential energy of an object at a height?

  • PE = mgh (correct)
  • PE = mg + h
  • PE = F × s
  • PE = 1/2 mv²

    • What principle states that energy cannot be created or destroyed?

    <p>Law of Conservation of Energy</p> Signup and view all the answers

    When a ball falls freely from a height, what happens to its potential energy?

    <p>Converts to kinetic energy</p> Signup and view all the answers

    What does the law of conservation of energy state?

    <p>Energy can be transferred from one form to another.</p> Signup and view all the answers

    How is power defined in physics?

    <p>The rate of doing work or transferring energy.</p> Signup and view all the answers

    What is the formula to calculate average power?

    <p>P = Total energy consumed / Total time taken</p> Signup and view all the answers

    What is the SI unit of power?

    <p>Watt</p> Signup and view all the answers

    What does 1 kilowatt-hour (kWh) equate to in Joules?

    <p>1 kWh = 3.6 × 10⁶ J</p> Signup and view all the answers

    Which factor does NOT affect kinetic energy?

    <p>Temperature</p> Signup and view all the answers

    What does the work-energy theorem state?

    <p>The net work done on a body is equal to its change in kinetic energy.</p> Signup and view all the answers

    What does kinetic energy depend on?

    <p>The object’s mass and its velocity</p> Signup and view all the answers

    Which type of potential energy is associated with an object’s position in a gravitational field?

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

    Which of the following statements about kinetic energy is true?

    <p>Kinetic energy increases with increasing velocity if mass is constant.</p> Signup and view all the answers

    What is the SI unit for measuring energy?

    <p>Joule</p> Signup and view all the answers

    How is kinetic energy (KE) calculated for an object with zero initial velocity?

    <p>KE = ½mv²</p> Signup and view all the answers

    What is potential energy primarily dependent on?

    <p>The mass and position of the object</p> Signup and view all the answers

    Which formula represents the relationship between force, mass, and acceleration?

    <p>F = ma</p> Signup and view all the answers

    If two identical objects are moving with different velocities, which statement is true?

    <p>The object with a higher velocity has more kinetic energy.</p> Signup and view all the answers

    What is the SI unit of energy?

    <p>Joule</p> Signup and view all the answers

    Which equation represents the work done by a force?

    <p>$W = F imes d$</p> Signup and view all the answers

    What happens to the work done if a force acting on a body causes no displacement?

    <p>It is zero.</p> Signup and view all the answers

    Mechanical energy is the sum of which two types of energy?

    <p>Kinetic energy and potential energy</p> Signup and view all the answers

    Which of the following statements about energy is true?

    <p>Energy is the ability to do work.</p> Signup and view all the answers

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