Question

An old man goes for morning walk on a semi circle track of radius 40m ,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

Answer 1

distance traveled will be 2.pi.r/2 = pi.r = 40pi m

displacement will be the distance between the 2 extreme points of the semi circle = 40+40 = 80m