That's a question that, up until about 350 years ago, people thought the answer was, "a hippo of course"! But today we know (and have proved) that they fall at the exact same speed. Here's why: Gravity acts on all objects the same way. The earth is so massive, that it pulls all other mass toward it. Objects with more mass are pulled toward the earth harder than objects with less mass. For instance, take a piece of paper and place a marble on it. The paper will hold the marble. Now put a bowling …

Jeremy Bailey from Fyffe, AL: "People say Hot water freezes faster than cool water. Perhaps it cools at a faster rate but It would have to reach the temp of the cool water before it could reach freezing point, right?" Jeremy, you are right to question this myth. Cold water will reach its freezing point faster than warm water, but not much faster. Here's why. It's all about temperature difference. The bigger the difference, the faster the heat transfer. So, since hot water and the freezing …