Question

Hello!!
What is displacement ?An athlete completes 1 round of circular track
of radius 105 m in 40 sec. What will be the distance covered and the displacement covered and the displacement after 1 min 20 sec.

Answer 1

circumference = 2π*105
~660m

I round - 40 seconds
2 rounds - 80 seconds

displacement is 0 because final position is same as initial position

distance = 2*circumference
=1320m

∴ d̅ = 0 m
d = 1320 m

Please mark as brainliest answer if it helps!

Answer 2

shortest distance between any two points called displacement.
total distance in 1 round covered by the athlete=2μr
=2*22/7*105
=660m.
total displacement after 1 round(40sec.) = 0
because starting point and ending point both are on one point
1 mint. = 60 sec.
1mint. 20sec. = 60sec. + 20sec.= 80sec.
total displacement after 1mint.20sec.(80sec.)=2*40sec.
= 2*0 (displacement im 40sec.)
= 0
after 1mint.20sec. the displacement of athelete is also 0.