Circular Motion and Velocity Changes
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Questions and Answers

Which of the following best describes the relationship between speed and velocity for an object moving at a constant speed around a circle?

  • Velocity remains constant while speed constantly changes.
  • Both speed and velocity constantly change.
  • Speed and velocity both remain constant.
  • Speed remains constant while velocity constantly changes. (correct)

    • Which of the following best describes the direction of velocity for an object moving at a constant speed around a circle?

  • Velocity is always pointing towards the center of the circle.
  • Velocity is always pointing away from the center of the circle.
  • Velocity is always perpendicular to the circle.
  • Velocity is always tangent to the circle. (correct)

    • Which of the following equations represents the centripetal or radial acceleration of an object moving at a constant speed around a circle?

  • $a = v/r^2$
  • $a = v^2/r$ (correct)
  • $a = r/v$
  • $a = v/r$

    • If the centripetal force acting on an object moving in a circle vanishes, what will happen to the object?

    <p>The object will fly off tangent to the circle.</p> Signup and view all the answers

    Which of the following equations represents the relationship between period (T) and frequency (ƒ) for an object moving in a circle?

    <p>$T = 1/f$</p> Signup and view all the answers

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