Question

two cars a and b are moving along in a straight line. car a is moving at a speed of 80 KMPH while car b is moving at a speed 50 KMPH in the same direction, find the magnitude and direction of (a) the relative velocity of car a with respect to b. (b) the relative velocity of car b with respect to a.

Answer 1

in this type of question we do this -
1.take a direction as positive
2.transfer the velocity of b to a with opposite sign to find velocity of a with respect to b