U1 Energy Force and Motion Index Cards Quiz
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Questions and Answers

What is the definition of acceleration?

  • A measurement of how fast an object is moving
  • The rate at which velocity is changing (correct)
  • The force that opposes motion through direct contact
  • The sum of all the forces acting on an object

    • In terms of forces, when is the net force zero?

  • When forces are all in the same direction
  • When forces are unbalanced
  • When no forces are acting on an object
  • When forces are balanced (correct)

    • What happens to an object's motion when the net force is nonzero?

  • The object stops moving
  • The object maintains its motion
  • The object's motion changes (correct)
  • The object speeds up indefinitely

    • Which term refers to a push or a pull that one object exerts on another?

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

    What does speed measure?

    <p>How fast an object is moving</p> Signup and view all the answers

    When do we observe unbalanced forces?

    <p>When forces are unequal in size</p> Signup and view all the answers

    What is the definition of velocity?

    <p>The rate at which velocity is changing</p> Signup and view all the answers

    Which type of force may or may not be opposite in direction?

    <p>Unbalanced forces</p> Signup and view all the answers

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