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9th Class Science Time and Motion Question Bank Case Based MCQs - Motion

  • question_answer
    Find the speed of train between 10:40 AM to 11:00 AM.

    A) 6km/h                                      

    B) 12km/h

    C) 20km/h                                     

    D) 36km/h

    Correct Answer: D

    Solution :

    [d] Distance travelled between 10 : 40 AM to 11:00 AM.
    D = 40 - 28=12 km
    Time =20 min =\[\frac{20}{60}=\frac{1}{3}\operatorname{h}\]
    \[\therefore \] Speed between 10 : 40 AM to 11:00 AM
                \[=\frac{Distance\ travelled}{Time}\]
         = \[\frac{12}{\frac{1}{3}}\] = 36 km/h


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