You’ll have to figure out specifically what about rockets you want to study since this field
contains almost all of science and engineering. A good place to start is to look at momentum
conservation and deriving the rocket equation. An interesting topic would then be to look
at rocket staging to see how many stages are required and why we may not want to have
too many stages. There is much interesting physics to learn and this would also be a good
opportunity to look at basic differential equations and air resistance. Again, you can focus
on any area you want but lets figure out together how to narrow it down.