RAJASTHAN PMT Rajasthan - PMT Solved Paper-1999

  • question_answer
    Momentum of a body of mass 1 kg is 10 kg-m/s/ then its kinetic energy will be:

    A)  \[\text{100}\,\text{J}\]                               

    B)         \[\text{50}\,\text{J}\]  

    C)  \[\text{1000}\,\text{J}\]             

    D)         \[\text{200}\,\text{J}\]

    Correct Answer: B

    Solution :

    Kinetic energy \[=\frac{{{p}^{2}}}{2m}\] (p = momentum, m = mass) \[=\frac{10\times 10}{2\times 1}\] \[\text{=50}\,\text{J}\]


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