An example of physical science is the study of projectile motion. Projectile motion refers to the motion of objects that are launched into the air and influenced only by gravity and air resistance. For example, when you throw a ball into the sky, it follows a curved path due to the combination of its initial velocity and the force of gravity. To study this phenomenon, you can calculate the ball's trajectory by using mathematical equations like the laws of motion and principles of projectile motion. By understanding the principles of physical science, you can explain, analyze, and predict the movement of objects in various situations.