JEE Main & Advanced Physics Two Dimensional Motion Question Bank Self Evaluation Test - Motion in a Plane

  • question_answer
    The velocity of a projectile at the initial point A is \[\left( 2\widehat{i}\text{ }+\text{ }3\widehat{j} \right)\]m/s its velocity (in m/s) at point B is

    A) \[-2\widehat{i}\text{ }+\text{ }3\widehat{j}\]      

    B)        \[2\widehat{i}-3\widehat{j}\]

    C) \[2\widehat{i}+3\widehat{j}\]                 

    D) \[-2\widehat{i}-3\widehat{j}\]

    Correct Answer: B

    Solution :

    [b] At point B the direction of velocity component of the projectile along Y - axis reverses. Hence, \[{{\overrightarrow{V}}_{\text{B}}}=2\hat{i}-3\hat{j}\]


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