Question

an athlete completes one round of a circular track of diameter 200 m in 40 second what will be the distance covered and the displacement at the end of 2 minutes 20 second

Answer 1

Diameter of track - 200m
radius - 100m
he covers 1round in 40s
in 140s he completes 140/40 =3x1/2
distance he covers
3x2pi r +1/2 x2pi r
2200m
displacement=shortest path between the initial and final position =2 r
2x100=220m

Answer 2

Answer:

Diameter of track - 200m

radius - 100m

he covers 1round in 40s

in 140s he completes 140/40 =3x1/2

distance he covers

3x2pi r +1/2 x2pi r

2200m

displacement=shortest path between the initial and final position =2 r

2x100=200m