Can,, I collided with train???
A bird is sitting on train which is coming from left moving towards east with a velocity 300 km/hr. Another train of same speed coming from right moving in west direction on the same track. When the trains 6 km apart , the bird starts flying with a velocity 30 km/hr with respect to ground towards 2nd train (moving towards west direction). After touching the 2nd train . it turns back to 1st train (moving towards east direction) and continue repeating this process until the trains collide. In this process , the total distance covered by the bird is ... (answer in metre)