a ball is projected with a certain angle with initial velocity u. it covers horizontal range R. With what initial velocity it must be projec

Question

a ball is projected with a certain angle with initial velocity u. it covers horizontal range R. With what initial velocity it must be projected keeping the angle of projection same so its horizontal range becomes 2.25R

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Dulcie 3 months 2021-08-12T08:28:16+00:00 1 Answers 13 views 0

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    2021-08-12T08:29:45+00:00

    Answer:

    1.5 u

    Explanation:

    The range equation is:

    R = u² sin(2θ) / g

    When u = v, R = 2.25 R.

    2.25 R = v² sin(2θ) / g

    2.25 u² sin(2θ) / g = v² sin(2θ) / g

    2.25 u² = v²

    1.5 u = v

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