External Forces Quiz
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Questions and Answers

What is the equation for weight (W) in terms of mass (m) and gravitational constant (g)?

  • $W = m - g$
  • $W = m + g$
  • $W = mg$ (correct)
  • $W = m/g$

    • What is the value of the gravitational constant (g) commonly used in calculations?

  • 10 N/kg
  • 6.67 x 10$^{-11}$ Nm$^2$/kg$^2$
  • 9.8 m/s$^2$ (correct)
  • 3 x 10$^8$ m/s

    • What is the direction of the ground reaction force in relation to the force of gravity or body weight?

  • Horizontal
  • Perpendicular
  • Upward (correct)
  • Downward

    • Where is the point of application of the ground reaction force?

    <p>Contact between foot and ground</p> Signup and view all the answers

    What is the resistance developed at the surface of contact when a force is required to make one surface slide over the other?

    <p>Frictional force</p> Signup and view all the answers

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