Branch of mechanics that deals with the motion of objects in relation to force, mass, momentum, and energy.
Dynamics can be divided into two branches, kinematics and kinetics. The foundations of dynamics were laid by Galileo, who derived the law of motion for falling bodies and was the first to recognize that all changes of velocity of a body are the result of forces. Isaac Newton formulated this observation in his second law of motion (&see; Newton's laws of motion).
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