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March 28, 2017

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two metra trains are on separate but parallel tracks. One has a speed of 90 km/hr, the other 80 km/hr. Initially, the two trains are 2.71 km apart. How long will it take the two trains to pass each other?

  • physics - ,

    (v1+v2)t=s
    t=s/(v1+v2)=2.71/170=0.016 h= 57.4 s.

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