In this activity you'll do some of your own tests to determine whether heavier objects fall faster ... of Pisa and dropped two balls that were the same size but had different densities.

People say that if you drop two objects of different mass, they have the same gravity. OK, the first problem is the word ... It is also true that a free falling (no air resistance) object falls ...

Heaviness perception involves a misperception of weight known, since the 19th century, as the Size-Weight Illusion ^1^. The larger of two objects of ... Although different hypotheses have been ...