👉 The term "impactor" refers to an object that causes or produces a change in another object. It is often used in physics and engineering contexts, where it describes a force or impulse that can cause a change in another system's behavior. For example, in the context of mechanical systems, a impactor could be a spring that compresses or expands according to a given force. The force applied by an impactor would cause a change in the velocity or displacement of the object that is being impacted