# If an athelet complete one round of a circular track of diameter 50 m in 30 sec..find the distance travel by athelet and the magnitude of the athelet at the end of 30 sec...???

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Distance = 25π metre

Displacement = 0

The time taken by the athlete to complete 1 round = 30s

So if he runs for 30s then he will complete 1 round and will be at the starting point

Therefore the distance will be the circumference of the circle (ie 25π metre)

and the displacement will be 0.