Question

An athlete completes one round of a circular track of 200m diameter in 40sec. what will be the

Distance covered and displacement at the end of 2 min and 20 sec?

Answer 1

Distance covered in 1 round = Circumference of the circle
Circumference of the circle = 2πr
Diameter = 200 mRadius = 100 m
Distance covered in 1 round[ 40 sec ] = 2 × 22/7 × 100 = 628.57 m
Distance covered in 1 sec = 628.57 ÷ 40 = 15.71 m
2min 20 sec = 140 secDistance covered in 140 sec = 15.71 × 140 = 2199.4 m
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