A boy completes one round of a circular park of radius R in 40 sec. What will be the displacement and distance at the end of 1 min 20 sec?
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Explanation:
If athlete completes one round of a circular track of radius R in 40 seconds then after 2 m 20 sec =140 sec he would have completed 3.5 rounds that means he will be at the diametrically opposite point of starting point.
Displacement =diameter=2R
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