Thanks a lot for all your answers!
I'll ask my physic teacher on Thursday to know if there's a workshop at school.
By the way, why are the belts so expensive? It's just a piece of plastic...
Thanks a lot for all your answers!
I'll ask my physic teacher on Thursday to know if there's a workshop at school.
By the way, why are the belts so expensive? It's just a piece of plastic...