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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?
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?
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?
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?
If the centripetal force acting on an object moving in a circle vanishes, what will happen to the object?
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Which of the following equations represents the relationship between period (T) and frequency (ƒ) for an object moving in a circle?
Which of the following equations represents the relationship between period (T) and frequency (ƒ) for an object moving in a circle?
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