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    Question

    A particle is fired with initial speed 30 m/s and lands

    back at same horizontal level. If its horizontal range is equal to 4.5 times the vertical height reached, find the value of tan θ, where θ is angle of projection.
    A 7/9 Correct Answer Incorrect Answer
    B 5/9 Correct Answer Incorrect Answer
    C 4/9 Correct Answer Incorrect Answer
    D 8/9 Correct Answer Incorrect Answer

    Solution

    Let the initial speed be u=30m/s and the angle of projection be θ. The horizontal range R is given by:

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