Answers

2015-08-18T13:32:33+05:30
Displacement is the shortest distance between starting and ending point.
from the starting point, 50 m north and 20 m south, net is 50-20 =30 m north
and to east it is 40m

it forms a right angled triangle with 30m and 40m as sides.
whose hypotenuse is sqrt(30^2  + 40^2) =  50m
so the net displacement is 50m
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