Question

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

Answer 1

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.