Hello. At our school we are required to write an essay 4000 long (IB diploma extended essay), probably to give an insight into what we will do in university. I chose to do a topic related to physics. For physics, they recommend us to have a good question where an experiment is feasible so we can write up a lab report based on our results. Possible questions are eclectic, so i really have no clue what will be best for my essay. I do know however, that I want to do a topic related to mechanics (pretty broad eh?) some students in the past have done things like: -What are the ideal dimensions(?) size etc for a parachute? -What affects the lift off of a plane more, the angle of hit or the velocity? -What is the ideal toilet paper roll so that the paper doesn't fall too fast or too slow? etc etc... I've been thinking about the physics in bicycles relating to why they are more stable when moving than stationary. However, i'm not too sure if there is enough physics (not too complicated but not too simple like a class experiment also) to write a 4000 word lab report. How do you feel about this idea? It would be really really helpful if you gave me some suggestions and commented on the bicycle idea. Thank you very much in advance!