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BCECE Engineering BCECE Engineering Solved Paper-2011

  • question_answer
    A train 100 m long travelling at 40 m/s starts overtaking another train 200 m long travelling at 30 m/s. The time taken by the first train to pass the second train completely is

    A)  30 s      

    B)                         40 s 

    C)  50 s                      

    D)         60 s

    Correct Answer: A

    Solution :

    Relative velocity of overtaking \[=40-30=10\,m/s\] Total relative distance covered with this relative velocity during overtaking \[=100+200=300m\] So,       \[\text{time}\,\text{taken}\,\text{=}\,\frac{\text{300}}{\text{10}}\,\,\text{=}\,\text{30}\,\text{s}\]


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