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NTSE Sample Paper NTSE SAT Practice Test-13

  • question_answer
    The initial velocity of a particle moving in a straight line is 10 \[m{{s}^{-1}}\]and the retardation is 2\[m{{s}^{-2}}\]. The distance moved by the particle in 5th second of its motion is           

    A) 1m          

    B) 19m      

    C) 25 m                

    D) 50 m

    Correct Answer: A

    Solution :

    [a] \[{{S}_{nth}}=u-\frac{a}{2}(2n-1)\] \[=10-\frac{2}{2}(2\times 5-1)\] \[=(10-9)m\] = 1 m              


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