I love Flat-Earthers because they’re amusing. They don’t “believe” in gravity. They claim that objects fall to the ground when released because the flat Earth is accelerating “up.” This doesn’t sound plausible but let’s see if it’s physically possible.
We want to calculate the velocity that the Earth would be moving and the amount of energy it would take to accelerate the Earth to that velocity. Let’s not quibble about where the energy comes from. Let’s just say … God farts a lot. We’ll discuss this more later.
Check my calculations, will ya?