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JEE Main & Advanced Physics Motion in a Straight Line / सरल रेखा में गति Question Bank Motion Under Gravity

  • question_answer
    An object is projected upwards with a velocity of 100 \[m/s\]. It will strike the ground after (approximately) [NCERT 1981; AFMC 1995]

    A)             10 sec 

    B)             20 sec

    C)             15 sec 

    D)             5 sec

    Correct Answer: B

    Solution :

                    Time of flight \[=\frac{2u}{g}=\frac{2\times 100}{10}=20\ sec\]


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