branch of mechanics or physics

Dynamics is the study of forces and their effects on motion over time. It is a branch of classical mechanics.

Isaac Newton developed three laws of motion that are fundamental to dynamics.

Some people consider dynamics to be made up of kinematics and kinetics.[1] Others consider dynamics and kinematics to be separate, and do not use the word kinetics.[2] Under the second view, kinematics is about describing how a system is at the moment, and dynamics is about how and why the system changes with time.[3]


  1. Kevin Brown. "Kinematics and Dynamics in Special Relativity". Retrieved 2019-01-20.
  2. Bingham, G.P. (1988), "A Note on Dynamics and Kinematics" (PDF), Haskins Laboratories Status Report on Speech Research, 93: 247–251, retrieved 2020-01-11
  3. Shankar, Ramamurti (2014). Fundamentals of Physics: Mechanics, Relativity, and Thermodynamics. Yale University. p. 3. ISBN 978-0-300-19220-9.