An athelete complete one round of circular track of diameter 200 m in 40 s. what will be the distance covered and the displacement at the end of 2 min 20 s?
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Given ,
→Time= 2 min 20s= 2× 60+20 = 140s
→ Radius, r= 100m
In 140s, the athelete will complete three and a half round.
✿ Distance covered= 2πr × 3.5
= 2× 22/7 × 100 × 3.5 = 2200 m.
At the end of his motion, the athelete will be in the diametrically opposite position.
Therefore,
✿ Displacement= diameter= 200m
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