Learn projectile motion definitions, key equations, and real-life examples for students and teachers. A projectile is an object upon which the only force is gravity. Once projected, its horizontal motion is explained by the law of inertia and its vertical motion is explained by the presence of gravity as an unbalanced, vertical force. Learn about the physics of projectile motion , the path and velocity of an object launched into the air under gravity alone. Find equations, examples, applications and history of this topic. Projectile motion is a form of motion where an object moves in parabolic path; the path that the object follows is called its trajectory.
