Work and Energy Transfer
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Questions and Answers

What is the formula for work when the force and the displacement are constant and the angle between them is also constant?

  • $W = |F| \cdot |s| \cdot \tan(\theta)$
  • $W = |F| \cdot |s| \cdot \theta$
  • $W = |F| \cdot |s| \cdot \sin(\theta)$
  • $W = |F| \cdot |s| \cdot \cos(\theta)$ (correct)

    • When does a force do negative work?

  • When its magnitude is large
  • When it has a component opposite to the direction of the displacement (correct)
  • When it is applied for a long time
  • When it has a component in the direction of the displacement

    • What is the SI unit of work?

  • Newton (N)
  • Watt (W)
  • Joule (J) (correct)
  • Coulomb (C)

    • What type of quantity is work?

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

    In the context of work, when is work done by the gravitational force positive?

    <p>When the gravitational force has a component in the direction of the displacement</p> Signup and view all the answers

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