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JEE Main & Advanced Physics Question Bank Oblique Projectile Motion

  • question_answer
    A stone is projected from the ground with velocity \[25\,m/s\]. Two seconds later, it just clears a wall 5 m high. The angle of projection of the stone is \[(g=10m/{{\sec }^{2}})\]

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

    B)             \[{{45}^{o}}\]

    C)             \[{{50.2}^{o}}\]      

    D)             \[{{60}^{o}}\]

    Correct Answer: A

    Solution :

                                For vertical upward motion \[h=ut-\frac{1}{2}g{{t}^{2}}\]             \[5=(25\sin \theta )\times 2-\frac{1}{2}\times 10\times {{(2)}^{2}}\]                         Þ25 = 50 sin q Þ\[\sin \theta =\frac{1}{2}\] Þ \[\theta =30{}^\circ \]


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