Question

Seeta is moving due east with a velocity of 1 m/s and Geeta is moving due west with a velocity of 2 m/s. What is the velocity of Seeta with respect of Geeta?

Answer 1

It is a one dimensional motion. So, let us choose the east direction as positive and the west as negative. Now, given that
$v_S$ = velocity Seeta = 1m/s
and $v_G$ = velocity of Geeta = -2m/s
Thus, $v_{SG}$ = velocity of Seeta with respect to Geeta
$=v_S-v_G=1-(-2)=3m/s$
Hence, velocity of Seeta with respect ot Geeta is 3 m/s due east.