a man running around a circular track of radius 20m cover one complete round in 40 second calculate the distance and displacement covered by him in 3 minutes
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perimeter of circular track = 2πr = 2π× 20 = 40π m
he covered 40π m in 40 seconds
3mins = 180seconds
180π m in 180 seconds
distance = 180π m
40seconds = 1 revolutions
180 seconds = 180/40 = 4.5 rounds
4 complete round and half round
so displacement diameter of circular track = 40m
he covered 40π m in 40 seconds
3mins = 180seconds
180π m in 180 seconds
distance = 180π m
40seconds = 1 revolutions
180 seconds = 180/40 = 4.5 rounds
4 complete round and half round
so displacement diameter of circular track = 40m
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