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  3. 9th Class
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  5. Time and Motion

9th Class Science Time and Motion Question Bank Motion

  • question_answer
    A truck running along a straight line increases its speed uniformly from 30 m/s to 60 m/s over a time interval 1 min. The distance travelled during this time interval is

    A)  900m

    B)  1800m

    C)  2700m  

    D)  3600 m

    Correct Answer: C

    Solution :

     Here\[a=\frac{u-v}{t}=\frac{60-30}{60}=0.5\,\,m/{{s}^{2}}\]and  \[s=\frac{{{v}^{2}}-{{u}^{2}}}{2a}=\frac{{{(60)}^{2}}-{{(30)}^{2}}}{2\times 0.5}=\mathbf{2700}\,\,\mathbf{m}\]


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