Projectiles come in all shapes and sizes. Projectiles are objects with an initial velocity that are only affected by gravity after initial velocity has been obtained. You see projectiles every day – in sports and even dropped from birds. In this lab, you will analyze the physical properties of a water balloon in flight, aka a projectile, over multiple trials. Background Looking to improve their artillery, the U.S. Army sent the Major Ringgold to France and England to study their technology. Upon his return, this soldier/innovator redesigned both U.S. field artillery and methods for firing the Duration: 60 Minutes.