These projects are things that are meant to be useful in some way, many of which are simulations meant for physics teachers.
Generate position/time and velocity/time graphs of cart movement based on your experimental setup.
Watch an explanatory video and try a simulation based on the AP Physics 1 2021 Problem 4. This simulation and the accompanying video reference research done by Lydian Holt and John Norris at Georgia Governor's School Honors Program.