If the Earth is a flat disc accellerating at 9.8m/s/s, this would satisfy the feeling of gravity on the earth, or while standing on it, perhaps even while flying over it. but explain to me what keeps the atmosphere in place. Gasses would be pushed out of the way and around of an accellerating flat earth and the earth would soon punch through the atmosphere, leaving it behind for all of us to suffocate in the vaccuum of space. want to experiment? I'm a smoker so many times i've moved my hand through a cloud of smoke, what does it do? it does not get trapped on the accellerating side of my hand, much like a solid object like a ball would, it instead moves around and behind my hand fluidly. i'm doing it right now just to check, yep it still does exactly as i said. now if you are claiming that there is no vaccuum in space and it instead full of air, and the air is more dense closer to the ground because of the accelleration, you still run into the problem of the different layers of the atmosphere. explain why we do not have a consistantly fresh atmosphere, how are we able to pollute it? why does air pollution stay up there when if we were moving through a space of air the pollution would surely at some point run off the edge of the earth. the proposed icewall could not trap it above the earth because it's only 150ft high and most of this pollution is much higher then that, in the area of 50-90km above the earth (sorry for using standard and metric interchangably, but i didn't feel like converting, we all know a KM is much greater distance then 150 feet).
Also, if the earth is flat, why is there a north pole? the outer edge, or the icewall, could be explained because it is against the cold of space, counteracting the heat from the sun and keeping it frozen, but there is nothing to keep the heat from the sun from melting the north pole. here is a very crappy diagram of it:
the blue is the earth, the big white circle around it is the icewall, and the middle is the north pole. The black line is the equator and the yellow dot is the sun, the yellow circle around it is the area of the most direct sunlight. Now we all know that the north pole does not get direct sunlight, but the sunlight is does recieve, combined with the heated water and air that surrounds it, and the fact there is no cold space against it to counteract this, would melt it.