physics
posted by shiwali .
an athlete completes one round of circular track of radius R in 40 second what will be his displacement at end of 2minutes 20 second

2minutes 20 secinds=3.5 rounds
circumfrence=2pieR
displacement=7x22/7xr
=22r
So the displacement will be 22r 
Nope, displscement is a vector.
displacement= ending positionstarting position.
As I calculate, he is opposite his starting position, or 2R, in the direction opposite the starting point. In polar coordinates, the displacement is
2R@180
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