Question

Car a is heading north with a velocity of 14 m/s. car b is traveling north also, with a velocity of 19 m/s. what is the relative motion between the two cars
a. 5 m/s
b. 14 m/s
c. 19 m/s
d. 33m/s

Answer 1

The anwser is A because you have to subtract.

Answer 2

a.)  Relative velocity = velocity of car B - velocity of car A
                             = 19 - 14
                             = 5 m/s
Hope this cleared your doubt, feel free to ask any question regarding this and have a nice day ahead! :)