Galileo's Observations on Objects on an Inclined Plane
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Questions and Answers

What did Galileo observe about the motion of objects on an inclined plane?

  • Objects move with a constant speed when no force acts on them. (correct)
  • Objects stop moving when no force acts on them.
  • Objects move slower when no force acts on them.
  • Objects move faster when no force acts on them.

    • What happens to the velocity of a marble as it rolls down an inclined plane?

  • It decreases
  • It remains constant
  • It stops
  • It increases (correct)

    • According to Galileo, if a marble is released from an inclined plane and goes up on the opposite side to the same height, what does this suggest?

  • The marble has external forces acting on it
  • The marble defies gravity
  • The inclinations of the planes are equal (correct)
  • There is no friction involved

    • What would happen if the angle of inclination of the right-side plane in Fig. 9.5(c) were gradually decreased?

    <p>The marble would travel further distances</p> Signup and view all the answers

    What is required to change the motion of a marble according to Galileo?

    <p>An unbalanced (external) force</p> Signup and view all the answers

    What does Galileo's observation imply about sustaining the uniform motion of a marble?

    <p>No net force is needed</p> Signup and view all the answers

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