Question

an athlete completes one round of circular track of diameter 200 m in 30 seconds. find the distance travel by the athlete and magnitute of displacement

Answer 1

For Better understanding → Refer the attachment.

As Diameter = 200 m then Radius = 100 m

Distance travelled = Circumference of the track

                              = 2 πr

                              = 2 × 3.14 × 100

                              = 628 m

Displacement = 200 m which is the shortest distance from starting and

ending line.
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