A bird is sitting on train A moving towards East with a velocity 300 km/hr. Another train B of same speed is moving in West direction on the same track. When the trains are 6 km apart, the bird starts flying with a velocity 30 km/hr with respect to ground towards B. After touching B, it returns back to A and continue repeating this process until the trains collide. In this process, the total distance travelled by the bird is
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Answer:
Relative velocity between trains: 600km/h
Time taken for crash is:
t=d/v = 6/600= 1/100 hours= 36 sec
Velocity of bird =30km/h = 30×5/18×36 = 300m
Hence, the answer is 300m.
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