7th Class Science Time and Motion Question Bank Motion and Time

  • question_answer
    A body moves on a circular track covering one complete round of 60 m in 10 seconds. Find its average speed.

    A) \[~3\text{ }m\text{ }{{s}^{-1}}\]                               

    B) \[6\text{ }m\text{ }{{s}^{-1}}\] 

    C)        \[36\text{ }m\text{ }{{s}^{-1}}\]        

    D)        \[600\text{ }m\text{ }{{s}^{-1}}\]                             

    Correct Answer: B

    Solution :

    \[Average\,speed=\frac{Dis\tan ce}{Time}=\frac{60}{10}\,=6\,m\,{{s}^{-1}}\]


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