IDK if inertia was the right choice, and I don't really understand the whole UA thing, but if the stars are moving with the earth, how can we set up a camera to track their movements through the sky? How would constellations work, noting that we can't see them all all the time? What happens when they go to they other side of the earth, which I'm assuming means they would go UNDER the UA?
I mean, correct me if I'm wrong, but can SOMEONE explain the UA to me? And don't reference me to a website, I want a person to tell me something.
But try this with a helium filled balloon, okay? get in your car and have it tied to a seat or something, so it's ALMOST hitting the top of the car. Now, go forward. The balloon will stay in a fixed place compared to the car, until the ribbon is taut.
Also, you say that the UA affects everything, not just the earth. So if EVERYTHING is accelerating upwards, what's stopping the atmosphere (atmoplane for FE?) from falling off? Instead of what would happen with downward accelration (air forced to northpole) it'd do the opposite (air forced south, to the edge) and what would stop it? An ice wall only a few hundred miles tall?
I'm not going to get into what sort of device could force EVERYTHING UPWARDS, and instead comment that gravity isn't meant to be magic, and HORIZONTAL gravity between particles has been observed. (Waits to be asked for a link, when it could be googled.) As a second year physics student, you should've seen reports on this.