Question

| Exercises
1. An athlete completes one round of a circular track of diameter
200 m in 40 s. What will be the distance covered and the
displacement at the end of 2 minutes 20 s?​

Answer 1

Answer:

Explanation:

the answer will be 200

Answer 2

Answer:

distance covered = 2200m

Explanation:

Diameter = 200m so radius = 100m

time = 40s

we know that - T = 2piR/v

So 40 = 2 pi ×100/v

40v = 2 pi × 100

v = 2 ×pi × 100 /40

v = pi × 5

we know that speed = distance / time

so distance = speed × time

distance = 5pi × 140s (here we took the time for which we have to calculate distance)

distance = 5 × 22 ×140 /7 (pi = 22/7)

distance = 2200 m