At what angle to the horizontal must the nozzle of a machine gun be kept when firing to obtain maximum horizontal range of the bullets?
- A0.0º.
- B30.0º.
- C45.0º
- D22.5º
Explanation
The horizontal range R of a projectile is given by R = (u² sin 2θ)/g. Maximum range occurs when sin 2θ = 1, which corresponds to 2θ = 90°, giving θ = 45°.
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