an athlete completes one round of a circular track of diameter 200m in

1.	an athlete completes one round of a circular track of diameter 200m in 40s .what is the distance covered and displacement at the end of 2min 20s ?
Answer» Answer: Explanation: 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

an athlete completes one round of a circular track of diameter 200m in 40s .what is the distance covered and displacement at the end of 2min 20s ?

Answer»

Answer:

Explanation:

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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