Which best describes kinematics in physics?

Kinematics is a branch of mechanics that focuses specifically on the motion of objects without delving into the forces that cause this motion. It aims to describe how objects move—analyzing parameters such as displacement, velocity, and acceleration. This approach allows physicists to understand and model motion purely based on the positional and temporal aspects, rather than the underlying forces or energy transformations at play. Consequently, this makes the investigation of motion without considering forces the defining characteristic of kinematics.

In contrast, the other options pertain to different areas of physics. The study of energy and forces encompasses dynamics, which does consider the forces that affect motion. The analysis of potential and kinetic energy relates to the broader study of energy forms but does not specifically address the characteristics of motion itself. Research of thermal energy transfer has no relation to the motion of objects, but rather to thermodynamics and energy transfer processes. Therefore, the correct description of kinematics is distinctly focused on the study of motion, unimpeded by the influences of force.