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NEET Physics Two Dimensional Motion NEET PYQ-Two Dimensional Relative Motion

  • question_answer
    The speed of a projectile at its maximum height is half of its initial speed. The angle of projection is [AIPMT (M) 2010] 

    A) \[{{60}^{o}}\]

    B) \[{{15}^{o}}\]

    C) \[{{30}^{o}}\]

    D) \[{{45}^{o}}\]

    Correct Answer: A

    Solution :

    The speed of a projectile at its maximum height
    \[v'={{v}_{0}}\cos \theta \]
    \[\frac{{{v}_{0}}}{2}={{v}_{0}}\cos \theta \]
    \[\cos \theta =\frac{1}{2}\]
    \[\theta ={{60}^{o}}\]


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