Question

Two cars a and b are moving along in a straight line cars a is moving at a speed of 80 km per hour while karbi is moving at a speed of 50 km per hour in the opposite direction and the magnitude and direction of



a. the relative velocity of the car a with respect of b

Answer 1

If two objects are moving in a straight or parallel line but opposite to each other,then the relative velocity should be summation of their own velocities meaning v(a)+v(b)=80 km/h + 50 km/h=130 km/h which is the relative velocity of car a with respect to car b and the direction here is opposite to car b :)