Final answer:
Biomechanics' subject of Kinetics involves the study of forces and the effects these forces have on the human body, particularly in motion. It focuses on the dynamics behind object and system movements as explained by Newton's laws of motion.
Step-by-step explanation:
With specific regard to Biomechanics, Kinetics can be defined as the branch of dynamics that involves the study of forces acting on the human body, and the effects of those forces. Kinetics is integral to the field of physics as it explores the causes behind the motion of objects and systems, which is derived from Newton's laws of motion. Unlike kinematics, which deals with the description of motion without consideration of its causes, kinetics delves into the dynamics of how external forces, such as gravitational pull or muscular force, impact motion.
In biomechanics, kinetics is crucial in understanding how the human body moves and how various forces influence that motion, whether it's in sports, rehabilitation, or everyday activities. For instance, when studying the motion of a runner, kinetics would examine the forces exerted by the ground on the runner's feet and the corresponding effects on the runner's velocity and acceleration.