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NTSE Sample Paper NTSE SAT Practice Test-8

  • question_answer
    A stone dropped from the top of the tower touches the ground in 4 sec. The height of the tower is

    A) 78.4m        

    B)                    52.2m

    C) 24.0m        

    D)                    12.8m

    Correct Answer: A

    Solution :

    [a] S \[=ut+\frac{1}{2}g{{t}^{2}}\] \[=0\times t+\frac{1}{2}\times 9.8\times {{(4)}^{2}}\] \[=(4.9\times 16)m\] = 78.4m


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