* Parabolic Trajectory: The path of a projectile is a parabola, assuming negligible air resistance.

* Constant Horizontal Velocity: The horizontal velocity of a projectile remains constant throughout its flight (again, ignoring air resistance).

* Vertical Acceleration due to Gravity: The only force acting on a projectile is gravity, resulting in a constant downward acceleration of 9.8 m/s².

* Independence of Horizontal and Vertical Motion: The horizontal and vertical components of a projectile's motion are independent of each other. This means that changes in the vertical motion (e.g., acceleration due to gravity) do not affect the horizontal motion.

* Symmetry of Trajectory: In the absence of air resistance, the trajectory of a projectile is symmetrical. The time it takes to reach its highest point is equal to the time it takes to fall back to its initial height.

Let me know if you would like a more detailed explanation of any of these characteristics!