Question

an athlete completes one round of a circular track of diameter 400 m in 40 seconds what will be the distance covered and the displacement at the end of 4 minute 40 seconds​

Answer 1

Answer:

Here the diameter of the circular track is d= 400m, Radius of track is 200m. Actually he will take 3.5 rounds in 140Sec so for first 3 rounds he will end at same position. on the 3.5th round he would have ran for exactly half circular track. So displacement is total distance= 1256.6/2=628.3.

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