PRIME EQUILIBRIO
https://phet.colorado.edu/it/simulations/balancing-act
SECONDE
MOTO PARABOLICO
https://www.youtube.com/watch?v=u-2AdUXEovo
https://m.youtube.com/watch?v=xhOL9dhMLig&pp=ygUeZGlkYXR0aWNhbWVudGUgbW90byBwYXJhYm9saWNv
https://phet.colorado.edu/sims/html/projectile-motion/latest/projectile-motion_all.html
MOTO ARMONICO