What angle of elevation yields the longest trajectory? I asked my friend who is an engineer and he was quick to respond 45 degrees, and yet on some internet site I saw an "estimate" of 35. I don't understand the physics of it to make an educated choice, but I suspect air resistance has something to do with the difference? No, opinions, please. Just the facts, man (or Ma'am). I tried a search of Angle, range, with no results, so I tried. Wanna kill these ads? We can help!