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An athlete completes one round of a circular track of radius 10 meter in 40 sec.the distance covered by him in 2min.20 sec.?
Wiki User
∙ 9y ago
Time=2m and 20 seconds ( converts it into second)
s0 time in seconds = 140 seconds
now
v=w*r = 2*22/7*100
40 seconds = 2 * 22/7 *100
1 second = 2 * 22/7 * 100/40
140 second = 2 * 22/7 * 100/40 * 400
so, it gives = 2200 m
so the distnace is 2200 m
and the dispalcement is 200 m
Wiki User
∙ 11y ago
Wiki User
∙ 9y ago220
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An athlet completes one round of a circular track of diameter 200m in 40s what will be the distance covered and the displacement at the end of 2 minutes 20s?
Distance covered - 2199m Displacement - 200m Distance covered - 2199m Displacement - 200m
An athlete completes one round of a circular track of diameter 200m in 40 seconds What will be the difference covered and the displacement at the end of 2 minutes 20 seconds?
Athlete covers 2pi radians in 40 s. So angular velocity = pi / 20 rad/s Hence the velocity = r w r = 100 m. So v = 5 pi m/s Hence the distance covered in 2 min 20 s ie 140 s = 700 pi metre. Displacement is the shortest distance between initial and final position In 140 s, 3 full rotation and one half rotation. So the he will be diametrically opposite. Hence the displacement is equal to 200 m ie diameter of the circular track.
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