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AFMC AFMC Solved Paper-2010

  • question_answer
    A body is thrown vertically upward in air when air resistance is taken into account, the time of ascent is r, and time of descent is t2, then which of the following is true?

    A) t1 = t2                                    

    B) t1 < t2

    C) t1 > t2                                    

    D) \[{{t}_{1}}\,_{<}^{>}\,{{t}_{2}}\]

    Correct Answer: B

    Solution :

    When a body is thrown up, its velocity goes on decreasing. Air resistance is smaller. When a body falls down, its velocity goes on increasing. Air resistance is larger\[{{t}_{2}}\] increases.  


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