an athlete complets one round of a circular track of diameter 200m in 30 secs find the magnitude of the displacement of the athelete at the end of 30secs
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the radius=d÷2
=200÷2=100m
circumference of the circle=2πr
=2×22/7×100
=44/7×100
=4400/7
displacement =final position - initial position
anyway circumference is not required because both it's final and initial position is same so it's displacement will be 0
displacement=0m
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