Open Question: An artillery crew wants to shell a position on level ground 34 km away.?
It depends on whether you are taking air resistance (drag) and wind into account.
Most physics problems don't, so you get a perfect parabolic trajectory.
Range = v(init)^2 * sin ? / g^2
34 km = (790 m/s)^2 * sin ? / (9.8 m/s^2)
A real artillery crew must take air resistance (including wind) into account.
That means that you don't have a symmetric parabola
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