in a circular track of distance 400 m an athlete runs the 1/2 of the ground. So what would be the displacement?
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Total length of the circular track = 400m
Athlete runs half of the ground i.e, X to Y in the above figure.
Circumference of a circle = 2πr
400 = 2πr
r = 200/π
r = 63.6
Displacement = diameter of circle = XY
= 2r
= 127.3 m
Therefore, displacement = 127.3 m
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