Which statement best defines kinetic analysis?

Which statement best defines kinetic analysis?

• A. It studies motion without forces.
• B. It examines forces such as torque, GRFs, and moments causing motion.
• C. It describes velocity only.
• D. It measures distance traveled.

Answer: (B)

Kinetic analysis focuses on the forces that produce or influence motion. It looks at how torques at joints, joint moments, and external forces such as ground reaction forces drive accelerations and changes in movement. This is different from describing motion itself—kinematics covers position, velocity, and acceleration without considering the forces behind them. For example, in a sprint start, kinetic analysis would quantify the ground reaction forces and the knee and hip moments that generate forward acceleration, explaining why speed changes occur. Describing motion only, like velocity or distance, doesn’t explain why the motion happens, which is why those options aren’t about kinetics.

Kinetic analysis focuses on the forces that produce or influence motion. It looks at how torques at joints, joint moments, and external forces such as ground reaction forces drive accelerations and changes in movement. This is different from describing motion itself—kinematics covers position, velocity, and acceleration without considering the forces behind them. For example, in a sprint start, kinetic analysis would quantify the ground reaction forces and the knee and hip moments that generate forward acceleration, explaining why speed changes occur. Describing motion only, like velocity or distance, doesn’t explain why the motion happens, which is why those options aren’t about kinetics.