Projectile motion is a form of motion in which an object or particle (called a projectile) is thrown near the earth's surface, and it moves along a curved path under the action of gravity only.
curved motion is motion along a path that is not straight. curved motion will necessarily be changing its direction as it moves.whenever an object travels in a curved path, there must be an unbalanced force acting upon it.ฝฝ
Therefore, an object following any type of curved motion will necessarily be changing its direction as it moves.