Newton's Laws and Point Masses Quiz
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Questions and Answers

According to the text, Newton's laws are often stated in terms of point or particle masses because

  • internal parts of real bodies can be neglected
  • the separation between bodies is much larger than their size
  • real bodies have negligible volume
  • real bodies can be approximated as pointlike (correct)
  • In the context of motion, what does it mean for a body to have a one-dimensional motion?

  • The body can only move in a circular path
  • The body can move in any direction
  • The body can only move in a straight line (correct)
  • The body can move in multiple dimensions
  • The mathematical description of motion, or kinematics, is based on the idea of

  • representing movement using numbers
  • assigning values to each position coordinate
  • using a time variable to represent a body's trajectory
  • specifying positions using numerical coordinates (correct)
  • When can the Earth and the Sun be approximated as pointlike?

    <p>When the separation between bodies is smaller than their size</p> Signup and view all the answers

    What is the function that represents a body's trajectory?

    <p>A function that assigns values to a time variable</p> Signup and view all the answers

    According to Newton's first law, an object will stay still or keep moving in a straight line unless a force acts on it. This is also known as the law of

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

    What is the mathematical equation that represents Newton's second law?

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

    According to Newton's third law, for every action, there is an equal and

    <p>Opposite reaction</p> Signup and view all the answers

    Which law of motion explains the concept of force and acceleration?

    <p>Second Law</p> Signup and view all the answers

    What happens when you push down on a diving board according to Newton's third law?

    <p>The diving board moves in the opposite direction</p> Signup and view all the answers

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