An athlete runs along a circular track of radius 28m and completes a round in 20second. Find his velocity at the end of (a) half a round (b) two rounds.
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I font know the answer to your wuestion
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Answer:
(i)5.6m/s (ii)0m/s
Explanation:
At the end of half round,
Velocity =Displacement/time
Displacement is the shortest route to the final position
Therefore,
Velocity =diameter of the circle/time
=28+28/10
=5.6m/s
At the end of two round,
Velocity =Displacement/time
=0/20+20
= 0m/s
Hope it helps
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