I love physics, but I find that I am ignorant about some of the more basic concepts, so forgive me if this question may sound a bit foolish. My teacher the other day demonstrated that all objects fall at the same rate on earth. The only reason things don't seem to follow this rules is because of air resistance. He showed that when flat, paper falls slower than a golf ball, but when crumpled to the size of the golfball they fall at the same rate. I have two questions about this. I know that a book will fall faster than a piece of paper of the same shape and size. I tested at home to make sure. If it has nothing to do with weight than why does the book fall faster? Also, shouldn't weight, or mass make a difference. If F = Gm1m2 / r^2, than surely the more massive something is than the faster it will fall. My textbook answers neither of these questions, so it would be much aporeciated if you could answer them. Thank you.