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An athlete completes a circular path of radius 'r'in40s. Find his displacement at the end of2 minutes 20seconds9.What dThe can |
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Answer» Radius is r. Circumference is = 2 pi r. Time is 40 s. Every 40 seconds he comes back to original position l. So in 140 s he would cover 3 and half circles. Hence Total distance is 2r pi x 3.5 = 7r pi. Total displacement will be = 2r since ball will be directly across the diameter |
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