1.

The maximum range of a gun on horizontal terrain is 1km. If `g = 10 ms^(-2)`, what must be the muzzle velocity of the shell ?A. `400 ms^(-1)`B. `200 ms^(-1)`C. `100 ms^(-1)`D. `50 ms^(-1)`

Answer» Correct Answer - C
`R_(max) = (u^(2))/(g)` at `theta = 45^(@)`
`:. U = sqrt(gR_(max)) = 100 ms^(-1)`


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