Year 5 have been learning about forces and studied two scientists who have theories about the speed at which things fall. Aristotle says that the heavier things are, the quicker they will fall, whereas Galileo felt that the mass of an object made no difference to the speed at which it fell.
Year 5 experimented to find out who was right by dropping things of the same weight but different shape and the same shape by different weights. They concluded that Aristotle was correct and it is the force of gravity that makes this happen. However, Year 5 also found out, from watching a clip on the moon, that when you take gravity out of the situation Galileo’s theory is correct and both a hammer and a feather fell at the same speed. So they are both correct! Year 5 learnt a lot during this experiment!