Final answer:
External forces govern the dynamics of a system in physics, affecting the velocity of the center of mass and system behavior, which is also important in biological temporal regulation and coordination.
Step-by-step explanation:
The student's question relates to what governs the dynamics of an object or a system, particularly in terms of changes in behavior like time and velocity. In physics, external forces are key to understanding how the velocity and behavior of the center of mass in a system change. Furthermore, it is essential to recognize that the velocity of the center of mass will change only if there is a net external force exerted on the system. When it comes to timing and coordination of behaviors, biological processes often involve temporal regulation and coordination, which are critical in natural selection as per biological principles.
Additionally, in the context of multiple objects within a system, the motion of the entire system should be analyzed rather than focusing on individual elements. This principle supports the idea that interactions between systems cause changes within those systems, described as Big Idea 4 in Advanced Placement (AP) courses. This kind of analysis falls under the study of kinematics and dynamics, which are central concepts in physics.