Oh, that's what you mean. Okay, so they're actually including the presence of air in the equation. I thought you were saying like in the real world. TBH, I thought you were just being sarcastic. But, that makes perfect sense. And, yes, a falling football falls faster than a falling balloon because the balloon is lighter and less dense, than air, and so is picked up by the air.
Originally Posted by Przemek_kondor