Question

if a boy runs around a circular track and he completed his two rounds find his distance and displacement.​

Answer 1

DIAGRAM:

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GIVEN:

• A boy runs around a circular track.

• He completed two rounds of circular track.

TO FIND:

• Distance travelled by the boy.

• Displacement travelled by the boy.

SOLUTION:

1.Distance travelled by the boy = circumference of circular track.

So,He completed 2 rounds

=> Distance = 2 ×2πr

=> Distance = 4πr

2. As the boy completed two rounds of the circle therefore his initial and final point will be same.

That is he started with a point and finished at that point.

Therefore, Displacement = 0