An athlete complete one round of circular park in 40s. The radius of circular park is 77m. He moves on it for 100s. Find distance and displacement covered by him.

An athlete complete one round of circular park in 40s. The radius of c

1.	An athlete complete one round of circular park in 40s. The radius of circular park is 77m. He moves on it for 100s. Find distance and displacement covered by him.
Answer» 1 round COVERED in 40 secondsso in 100 seconds he will move 5/2 round i.e. 2.5 ROUNDS of trackso as the RADIUS is = 77Distance = (2pi r = 1 round ) so 2.5 round = 2pi r * 5/2 = 5pi rDisplacement = 2r as at LAST he has only COMPLETED half round so he will be on the other side od diameter of circle so = 2r = 154mExplanation:

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An athlete complete one round of circular park in 40s. The radius of circular park is 77m. He moves on it for 100s. Find distance and displacement covered by him.​

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An athlete complete one round of circular park in 40s. The radius of circular park is 77m. He moves on it for 100s. Find distance and displacement covered by him.