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At what angle with the horizontal should a ball be thrown so that the range `R` is related to the time of flight as `R = 5 T^2` ? `(Take g = 10 ms6-2)`.A. `45^(@)`B. `15^(@)`C. `60^(@)`D. `90^(@)` |
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Answer» Correct Answer - A `(2 u^(2) sin theta cos theta)/(g)=5 ((2u sin theta)/(g))^(2)` `theta = 45^(@)`. |
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