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So what we need to do was create a device that would make a projectile. We just made a ramp shaped like a V and a marble that slides down it and shoots off. The ramp levels off so there's no Y component to the velocity. Its a nice device, reproducable results and all that. What we need to do is know the marbles flight path so that our teacher can set up a ring at any length along its path, and we'll calulate the height so that the marble will fly through. The ring will be level with the ground.

here's the part i need a little help with, or i want to double check that what i'm doing is right. We'll do some test runs and use the times and distances it produces to find the X velocity initial of the marble. We alreasy know that the Y velocity initial is zero right? Y acceleration is 32 ft/s2 yes? no acceleration in the X direction once it leaves the ramp yes?

So once we have velocity in the X we'll have all the info we need right? Then when he gives us the distance we need to go, we'll find how long it takes the marble to travel that distance, and use it in the equation to find how far in the Y direction it goes,(the height we'll need to place the ring.)

am i wrong with anything? something i'm missing? will everything be alright and accurate and ok?

thanks yall, the help is much appreciated