Masses in Motion

a. Thermodynamics

b. Geophysics

c. Neurophysics

d. Kinetics

D. Kinetics. Remember, potential energy has to do with objects not in motion and kinetic energy has to do with things in motion.

Masses in motion is d) Kinetics. Kinetics in physics and engineering is defined as "the term for the branch of classical mechanics that is concerned with the relationship between the bodies and its causes, namely forces and torques." However the word dynamics is now used in physics, while the word kinetics is still employed in engineering.