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\[17.5\,\,m\,\,{{s}^{-2}}\].
    Ram's car does not start, so his friend helps him by pushing it for \[10\] seconds after which the car reaches a speed of\[2\,\,m\,\,{{s}^{-1}}\]. Calculate the acceleration of the car.

    A) \[20\,\,m\,\,{{s}^{-2}}\]           

    B)        \[0.2\,\,m\,\,{{s}^{-2}}\]  

    C) \[5\,\,m\,\,{{s}^{-2}}\] 

    D)        \[10\,\,m\,\,{{s}^{-2}}\]

    Correct Answer: B

    Solution :

    \[a=\frac{v-u}{t}=\frac{2-0}{10}=0.2\,\,m\,\,{{s}^{-2}}\]


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