Radius of circular track = 0.2 km = 200 m
time to complete one revolution = 2 minutes
so here we can say that velocity is defined as ratio of total distance traveled and total time of motion
Here in one revolution total distance moved will be equal to one circumference
[tex]d = 2\pi R[/tex]
[tex]d = 2 \pi * 200 = 400 \pi[/tex]
[tex]t = 2 min = 120 s[/tex]
now speed is given by
[tex]v = \frac{400 \pi}{120}[/tex]
[tex]v = 10.5 m/s[/tex]
so velocity of scooter is 10.5 m/s
