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JEE Main & Advanced Physics Motion in a Straight Line / सरल रेखा में गति Question Bank Relative Motion

  • question_answer
    A train of 150 meter length is going towards north direction at a speed of \[10m/\sec \]. A parrot flies at the speed of \[5\,\,m/\sec \] towards south direction parallel to the railway track. The time taken by the parrot to cross the train is [CBSE PMT 1992; BHU 1998]

    A)          12 sec                           

    B)          8 sec

    C)          15 sec

    D)          10 sec

    Correct Answer: D

    Solution :

               Relative velocity               \[=10+5=15\ m/sec\]          \[\therefore \]\[t=\frac{150}{15}=10\ sec\]


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