Question

is 200 METER the answer for the question AN ATHLETE RUNS A CIRCLE OF DIAMETER 200 METER IN 40 SECONDS ,WHAT IS THE DISPLACEMENT OF THE ATHLETE AT THE END OF 2 MIN 20 SEC​

Answer 1

HI there !!

Displacement is the shortest distance possible between initial and final position.

As the athlete is in circular motion , displacement is zero. [ THis is because , the initial and final position is the same ]

Distance covered in 1 round = Circumference of the circle

Circumference of the circle = 2πr

Diameter = 200 m

Radius = 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 sec

Distance covered in 140 sec = 15.71 × 140 = 2199.4 m

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Answer 2

Answer:

200

Explanation

Since in 2 min it travels the whole circle an reaches the same point from where he started in the men 20 sec he will reach the diametrically opposite point hence the answer is 200 as you thought