Work, Energy, and Power MCQ 2
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Questions and Answers

What is the unit of work, energy and Power respectively?

  • Joule(J), Joule(J), Watts(W) (correct)
  • Speed, Newton, Momentum
  • Joule(J), Watt(W),Joule(J)
  • Meter

    • According to the principle of conservation of energy, what happens to energy?

  • It can be created
  • It can be destroyed
  • It remains constant in a closed system
  • It changes form but cannot be created nor destroyed (correct)

    • What is the rate at which work is done known as?

  • Energy
  • Power (correct)
  • Newton
  • Meter per second

    • What is the formula for calculating work?

    <p>W = Fd</p> Signup and view all the answers

    Which of the following is a scalar quantity?

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

    Why is energy not conserved in collisions between objects?

    <p>Energy converts into different forms</p> Signup and view all the answers

    What is power a measure of?

    <p>Rate of doing work or converting energy</p> Signup and view all the answers

    Which quantity is the ability to do work?

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

    What is the formula for calculating kinetic energy?

    <p>$EK = \frac{1}{2}mv^2$</p> Signup and view all the answers

    Which of the following represents a renewable source of energy?

    <p>Solar power</p> Signup and view all the answers

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