When an object moves on a circular path and come back to its initial position, then:
Correct answer: B. Only its displacement is zero.
- A. Only its distance is zero.
- B. Only its displacement is zero.
- C. Neither distance nor displacement is zero.
- D. Both distance and displacement is zero.
Explanation
Correct option is B. When an object moves in a circular path and returns back to its initial position then only its displacement is zero. This is because displacement is a vector quantity. It is the distance moved from a certain reference point or the shortest distance between 2 points. When the object completes one revolution and comes to point A the distance traveled will be equal to thecircumference of the circular path whereas if we draw a straight line between the start point and end point the length is zero and hence displacement is zero.
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About Displacement and Velocity
Displacement is the directed change in position, while velocity is the rate of change of displacement and includes both magnitude and direction. The topic connects position-time and velocity-time graphs with average and instantaneous values, and distinguishes displacement from distance and velocity from speed.
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