9th Class Science Time and Motion Question Bank Motion

  • question_answer
    Direction: Questions 24 are based on the information given below.
    A space shuttle is launched into space. During the first \[8\] minutes of its launch the average acceleration of the shuttle is\[17.5\,\,m\,\,{{s}^{-2}}\].
    hat is its speed after \[8\] minutes?

    A) \[8000\,\,m\,\,{{s}^{-1}}\]        

    B)        \[8400\,\,m\,\,{{s}^{-1}}\]  

    C) \[1200\,\,m\,\,{{s}^{-1}}\]        

    D)        \[1500\,\,m\,\,{{s}^{-1}}\]

    Correct Answer: B

    Solution :

    \[v=u+at=0+17.5\times (8\times 60)\]        \[=8400\,\,m\,\,{{s}^{-1}}\]


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