PhySP18SS5.1.30 Now take this idea of con of mom to a bigger level. Shoot a firework shell into the air. After the explosion, the 1000 momentums of all those colorful 3D scintillations when added up equal the original momentum of the sheel JUST BEFORE EXPLOSION. So . . . if you follow the combined vectors of all the scintillations, it will complete the parabolic type 2A projectile motion that the original shell had. Ha!! Good Grief . . . I love physics so much.