Hi Louise,
be careful in the discussion around
discuss weight plays a role on how fast things fall, but ultimately everything falls.
since the role of air resistance is tied up with this. Aristotle thought that the heavier an object was, the faster it would fall. This isn’t true, and Galileo found that out by doing experiments on objects going down ramps (the ramps meant that the objects went slow enough that he could measure their speed).
If there is no air, then all objects fall at the same speed. You can see this at this video from Brian Cox, or from the video of the astronauts on the Moon where there is no air.