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  3. CEE Kerala Engineering

CEE Kerala Engineering CEE Kerala Engineering Solved Paper-2007

  • question_answer
    Two trains are moving with equal speed in opposite directions along two parallel railway tracks. If the wind is blowing with speed u along the track so that the relative velocities of the trains with respect to the wind are in the ratio\[1:2,\] then the speed of each train must be

    A)  \[3u\]                  

    B)         \[2u\]                  

    C)  \[5u\]                  

    D)         \[4u\]

    E)  \[u\]

    Correct Answer: A

    Solution :

    Let the speed of trains be v. \[\therefore \]  \[\frac{v-u}{v+u}=\frac{1}{2}\] or            \[2v-2u=v+u\] or            \[v=3u\]


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