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JEE Main & Advanced Physics Motion in a Straight Line / सरल रेखा में गति Question Bank Non-uniform Motion

  • question_answer
    The displacement of a particle, moving in a straight line, is given by \[s=2{{t}^{2}}+2t+4\] where \[s\] is in metres and \[t\] in seconds. The acceleration of the particle is             [CPMT 2001]

    A)             2 m/s2 

    B)             4 m/s2

    C)             6 m/s2 

    D)             8 m/s2

    Correct Answer: B

    Solution :

                    \[s=2{{t}^{2}}+2t+4,\ a=\frac{{{d}^{2}}s}{d{{t}^{2}}}=4\,m/{{s}^{2}}\]


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