Something similar was literally one of the first things I tried, I suggested dropping a rock and a feather but he claims a feather has no mass. o0) Regardless, this is something I find interesting and would like to know. I've found calculators that could calculate it for me but I don't...
Me and my grandfather got into a "debate" (more like one-sided argument) on whether objects fall at the same rate on Earth independent of air resistance or not. He claims that "If you drop 2 objects from an airplane -- like a car and a marble, both objects would hit the ground at the same...