There's a surprising amount of depth to flat earth models that describes most of those situations, but I haven't heard a reasonable explanation for satellites.  They're typically written off as a large-scale deception created by the government.

Not that it matters, but the water stays in the bucket because of the force of the bucket on the water.  Gravity still wants the water (and the bucket) to drop on our heads.  :)

You're supposed to throw it into fountains, not plane engines

I'd describe it as a selective use of physics; when a facet of the flat earth model coexists within the existing framework of physics, they make it apparent.  However, they conveniently avoid any collisions.  For example, if there is truely a universal acceleration of 9.8 m/s^2 then how do we explain the small weight differences between a person on earth and that same person in an airplane at cruising altitude? 

Universal acceleration is a concept in flat earth models that states that the flat earth is accelerating at 9.8 m/s^2.  It attempts to replace our concept of gravity.  In our framework of physics, your explanation is correct and we can measure the difference with a good enough scale.  I don't know how the flat earth model reconciles that with their universal acceleration though.  They conveniently avoid it.  

These religious extremists and anti-science nutjobs always rant about how triggered we get. Fuck their emotions and fuck them too. Talk shit and get shit in return. Either they accept that or they quit brainwashing children.

They use a claim from special relativity that the speed of an object can only come close to the speed of light.  The idea is that an object with mass will require increasing energy to maintain acceleration and infinite energy to reach the speed of light.  This means that the universal acceleration must be creating more energy every second which is a clear violation of the conservation of energy.  I don't think they acknowledge that though.

That's a lot of balloons.  

Dark energy, just like the standard model.  

What's actually more strange about the people who believe these kind of theories, is that they never do any real research on it. Looking at NASA picture online and claiming all are fake by using photoshop filters, throwing out all the laws of physics and making up some abracadabra thoeries about how stuff works on a flat earth is not doing REAL PHYSICAL research.

The people who believed that the earth (and all other planets, moons, stars) was a sphere went out there and got real proof of it. The built tools for measuring stuff, made planes, satelites and rockets to physically go up there to see how it looks. So the gathered real proof of what they thought to be true. Of course anybody is entitled to doubt given result and conclusion (beind doubtfull is a good thing). But if you are convinced something is wrong, then why not go out there to proof your point.

It seems there are more than enough people out there that beliefe we live on a floating pizza, so why don't the join forces and proof all of us wrong. Hire a freaking rocket or plane that goes high enough to show us all that it's flat. Make some nice pictures of the edges of the earth and sacrife one lucky person to go over the edge so we can see how he falls off and dissapears into nothingness.

If only they were theories...