downward/ independent/ projectile/ two/ upward /vertically 1. A is an object upon which the only force acting is gravity. 2. An object that is thrown upward is also a projectile (provided that the influence of air resistance is negligible). 3. An object which is thrown at an angle to the horizontal is also a projectile (provided that the influence of air resistance is negligible). 4. A projectile is any object that once projected or dropped continues in motion by its own inertia and is influenced only by the force of gravity. 5. Projectile motion has components.​