a body completes one round of a circle of radius r in 20 seconds. the displacement of the body after 50 sec
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ok ok
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After 20 sec the body returns at point A and again after 40 sec the body returns at point A. In 5 sec, the body completes quarter of circle. Therefore, The body will be at B after 45 sec. Hence, The displacement of the body after 45 second is .
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