An athlete completes 100 m race on a straight
track. Calculate the distance and magnitude of
displacement of athlete during the race.
Answers
An athlete completes 100 m race on a straight track.
Since it is not given that it returns to its starting point again or it starts from here and then returns back. So, the distance travelled by the athlete is 100 m. (As it is a straight track)
Also, the displacement is 100 m.
But if it was given that it completes 100 m race on a straight track and return back to it's the actual position. Then the distance covered by the athlete will be 200 m (100 + 100).
And the displacement becomes zero. As it's starting and ending points are same.
Cases where displacement must be zero:
- If the object move has moved some distance and returned at the same initial point in the end then the displacement is zero.
- If the object doesn't travel any distance then displacement must be zero.
- If it is the circular track.
Answer:
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