Hi. I decided a month or so ago, that I am going to do my physics extended essay on the topic of terminal velocity. However, at the moment I am not sure what experiment I can do. At the beginning I thought I would do an experiment where I would drop bodies made of cardboard with different surface area while keeping mass constant, and then different masses while keeping surface area constant, and then analyse their effect on terminal velocity. But now I am thinking that this is way too easy and simple for a Extended Essay, it is only sufficient for a normal class lab. Is there any way in which I can modify my experiment so it is better suited for extended essay. Perhaps making the theory a little bit more complex. Any ideas? I was thinking may be to make parachutes instead of dropping simple objects. I also thought of investigating terminal velocity in water (Stokes law)? Do you have any other ideas? Thanks! Any ideas much appreciated.