A girl runs in a circular track of radius 5m and completes in 3 min 20 s. what is her velocity in m/s ?
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Answer:
0.157 m/s
Step-by-step explanation:
Velocity= Distance/Time
First we need to find distance,
Radius is given as 5m.
It is a circular track. Therefore, distance covered will be the circumference/perimeter.
Distance covered= 2x pi x r
= 2x 22/7 x5
= 44/7x5
= 31.4 m
Time= 3 min 20 sec
= 180s+20s (multiplied 3 by 60)
=200s
V=D/t
= 31.4/200
= 0.157 m/s
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