In question number 85, what is the relative velocity of a car A with respect to car B, if car is moving eastward and car B is moving toward westward?

In question number 85, what is the relative velocity of a car A with r

1.	In question number 85, what is the relative velocity of a car A with respect to car B, if car is moving eastward and car B is moving toward westward?
Answer» `15 km h^(-1)` `45 km h^(-1)` `60 km h^(-1)` `105 km h^(-1)` Solution :Velocity of CAR A w.r.t ground `THEREFORE v_AG = 60 km h^(-1)` Velocity of car B w.r.t ground`therefore v_BG = -45 km h^(-1)` Relative velocity of car A w.r.t car B is `v_AB = v_AG + v_GB = v_AG - v_BG = 105 km h^(-1)`(since`v_GB = -v_BG)`