1. A baseball: When a baseball player hits a ball, it becomes a projectile, traveling through the air in a curved path.

2. A bullet: A bullet fired from a gun is a classic example of a projectile. It travels in a straight line until affected by gravity.

3. A water balloon: When you throw a water balloon, it becomes a projectile, following a parabolic path until it lands.

4. An arrow: An arrow launched from a bow is a projectile that travels a significant distance with a relatively straight trajectory.

5. A cannonball: A cannonball fired from a cannon is a powerful projectile, traveling a long distance and with a trajectory affected by both gravity and air resistance.