What term describes forces in motion?

The term that best describes forces in motion is "dynamic." In physics, dynamics refers to the study of forces and their effects on the motion of objects. It encompasses how forces interact with objects when they are in motion, contrasting with the concept of statics, which deals with forces in equilibrium and objects at rest.

Choosing "dynamic" reflects an understanding of how forces cause changes in motion and how objects respond to these forces under various conditions. This term encompasses the principles of mechanics that explain how forces work together to influence the movement and acceleration of objects.

The other terms provide different contexts: "force" is a measure of the push or pull on an object, while "vector" specifically refers to quantities that have both magnitude and direction, like velocity or acceleration. "Static," on the other hand, pertains to situations where all forces are balanced and there is no movement. Thus, "dynamic" is the most appropriate choice when discussing forces in motion, as it encompasses both the forces themselves and the resulting motion.