Physics Friction Concepts
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Questions and Answers

What is the main role of friction in motion?

  • It acts in the same direction as the applied force.
  • It has no effect on motion.
  • It increases the speed of the moving object.
  • It acts in the opposite direction to movement. (correct)
  • What does the coefficient of friction $\mu$ represent?

  • The total distance an object travels.
  • The speed at which an object begins to slide.
  • The applied force on an object in motion.
  • A constant value depending on the surfaces in contact. (correct)
  • Which equation correctly describes the relationship between initial velocity, final velocity, acceleration, and time?

  • $d = v_i + at^2$
  • $d = v_f t + rac{1}{2}at^2$
  • $v_f = d + at$
  • $v_f = v_i + at$ (correct)
  • What is static friction primarily responsible for?

    <p>Holding a stationary object until a breaking point is reached.</p> Signup and view all the answers

    In terms of the forces acting on an object, what does the normal force represent?

    <p>The force acting vertically against gravity.</p> Signup and view all the answers

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