Question

A boy is jogging around a circular track of diameter 14m.He takes 1 minute to complete the circle. Find the average speed and average velocity of the boy
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Answer 1

Answer:

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Answer 2

Explanation:

Average speed = Distance covered/time taken

Speed = 2πr/60

(Circumference of circle = 2πr) (r = 14/2 = 7m)

(Time taken = 1 min = 60 sec)

Speed = (2*22/7*7)/60

Speed = 44/60 = 22/30 = 11/15 m/s

Average Velocity = Displacement/Time Taken

Since the initial and final position of the boy is same, so Displacement = Zero

Therefore Average Velocity = 0/60 = 0 m/s