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J & K CET Medical J & K - CET Medical Solved Paper-2008

  • question_answer
    The rate of mass of the gas emitted from rear of a rocket is initially 0.1 kg/s. If the speed of the gas relative to the rocket is 50 m/s and mass of the rocket is 2 kg, then the acceleration of the rocket (in\[m/{{s}^{2}}\]) is

    A)  5                                            

    B)  5.2

    C)  2.5                                        

    D)  25

    Correct Answer: C

    Solution :

                     \[a=\frac{\Delta v}{\Delta t}=\frac{v}{m}.\frac{\Delta m}{\Delta t}\] \[=\frac{50}{2}\times 0.1\] \[=2.5m/{{s}^{2}}\]


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