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Introductory Physics Homework Help
Finding the Angle of Trajectory
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[QUOTE="Lamebert, post: 4498289, member: 487504"] [h2]Homework Statement [/h2] A projectile is launched from the earth’s surface at initial speed v[SUB]i[/SUB] at angle θ[SUB]0[/SUB] with the horizontal. When the projectile is at its maximum height h, it has half the speed it had when it was at half its maximum height h/2 At what angle was the projectile launched? [h2]Homework Equations[/h2] [h2]The Attempt at a Solution[/h2] I know that the velocity vector at the highest point is v[SUB]i[/SUB]cosθ, and I know that the maximum height of the parabola is (v[SUB]i[/SUB]sinθ)[SUP]2[/SUP] / 2g. At this point, I don't really know where to go. I'm not sure how to relate height and velocity together with what I know. I was doing this earlier and I tried to go further, but I just ended up with a lot of variable/trig function couples that don't make sense. I could take a picture of all the work I've done, but you wouldn't be able to follow it. I barely know what I tried. You don't really have to answer it for me, just what should the next step be? [/QUOTE]
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Finding the Angle of Trajectory
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