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

  • question_answer
    A missile is fired for maximum range with a initial velocity of 20 m/s. If \[g=10\text{ }m/\text{ }{{s}^{2}},\] the range of the missile is                            [AIPMT (S) 2011]

    A) 50 m

    B) 60 m

    C) 20 m    

    D) 40 m

    Correct Answer: D

    Solution :

    For maximum range of projectile \[\theta \] will be \[{{45}^{o}}\] by the law of projectile motion
    \[\therefore \]      \[{{R}_{\max }}=\frac{{{u}^{2}}}{g}\]
    Given,   \[u=20\,m{{s}^{-1}}\] and \[g=10\,m{{s}^{-2}}\]
    \[{{R}_{\max }}=\frac{{{(20)}^{2}}}{10}=\frac{400}{10}\]
    \[{{R}_{\max }}=40\,m\]


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