Question

An old man goes for morning walk on a
semicircular track of radius 40 m; if he starts
from one end of the track and reaches to other
end, the distance covered by the man and his
displacement will respectively be -
( 126 m, 80 m (2) 80 m, 126 m
(3) 80 m, 252 m
(4) 252 m, 80 m
how to find displacement?​

Answer 1

Answer:

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Answer 2

1st will be the answer
In order to calculate the displacement we will need to find the shortest distance between the starting and final point which is the length of the diameter of the semicircular field
displacement = 2r = 2×40 = 80m