Answer :

Speed of car 1 = 18 km/h

Speed of car 2 = 27 km/h


Relative speed of the cars = (18+27) = 45 km/h. (since they both are moving in the same direction)


Total distance between the cars = 36 km/h.


Time taken to cover the distance = Total distance / Relative Speed = 36/45 = 0.8 hours


Distance covered by the bird in 0.8 hours = Speed x Time = 36 x 0.8 = 28.8 km


Displacement will be the distance between the starting point and the point of meeting of the cars.


Since the cars meet in 0.8 hours, the distance from the starting point will be 18 x 0.8 = 14.4 km. (The bird starts from the car running at 18 km/h). Thus, the displacement of the bird is 14.4 km.


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