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Thread: How long did it fly?

  1. #1
    Expert Member
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    Jun 2006
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    410

    How long did it fly?

    Two trains start from stations A and B spaced 150kms apart at the same time and speed. As the trains start, a bird flies from one train towards the other and on reaching the second train, it flies back to the first train. This is repeated till the trains collide. If the speed of the trains is 50 km/h and that of the bird is 50km/h. How much did the bird travel till the collision.

    --James.


  2. #2
    Contributing Member
    Join Date
    Jul 2006
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    52

    Re: How long did it fly?

    I think the bird has travelled a distance of 75km. This is because since given the speed of train and bird is same as per my idea the trains collide after travelling 75km with a speed of 50km/hr.


  3. #3
    Expert Member
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    Jun 2006
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    410

    Re: How long did it fly?

    You are very correct Bessie.

    Okay...what if the speed of the bird is 150 km/h ?

    -- James.


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