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bobbyxii6033
27.11.2019 •
Physics
Fast bullets a rifle with that shoots bullets at 420 m/s shoots a bullet at a target 49.8 m away. how high above the target must the rifle barrel be pointed to ensure that the bullet will hit the target?
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Ответ:
0.08°
Explanation:
velocity of projection, u = 420 m/s
Horizontal range, R = 49.8 m
Let the angle of projection is θ.
Use the formula for the horizontal range.
Sin 2θ = .0027
2θ = 0.1585
θ = 0.08°
Ответ: