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CMC Medical CMC-Medical Ludhiana Solved Paper-2014

  • question_answer
    A scooter of mass 120 kg is moving with a uniform velocity of 108 km/h, the force required to stop the vehicle in 10 s is

    A)  360 N                                   

    B)  720 N

    C)  180 N                   

    D)  120\[\times \]108 N

    Correct Answer: A

    Solution :

                    \[v=u+at\] \[0=\left( 108\times \frac{5}{18} \right)+a\times 10\] \[0=6\times 5+a\times 10\] \[a=\frac{30}{10}=3\,m\text{/}{{s}^{2}}\] Force (f) = ma \[=120\times 3\] \[=360\,N\]


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