The capacity to do work or cause physical change; energy, strength, or active power:
The capacity for work or vigorous activity:
Energy, push, or aggressiveness:
(Rare) The ability to move
The driving force of a propeller in the line of its shaft
A surge of emotion:
Rapidity or speed of motion; swiftness.
A vector quantity that expresses the relation of the velocity of a body, wave, field, or other physical system, to its energy. The direction of the momentum of a single object indicates the direction of its motion. Momentum is a conserved quantity (it remains constant unless acted upon by an outside force), and is related by Noether's theorem to translational invariance . In classical mechanics, momentum is defined as mass times velocity. The theory of Special Relativity uses the concept of relativistic mass . The momentum of photons, which are massless, is equal to their energy divided by the speed of light. In quantum mechanics, momentum more generally refers to a mathematical operator applied to the wave equation describing a physical system and corresponding to an observable ; solutions to the equation using this operator provide the vector quantity traditionally called momentum. In all of these applications, momentum is sometimes called linear momentum.
(Physiol.) The progressive wave of excitation over a muscle or nerve fiber, which causes or inhibits activity in the body
(Statistics) The expected value of a positive integer power of a random variable. The first moment of a random variable is the mean of its probability distribution.
Find another word for momentum. In this page you can discover 11 synonyms, antonyms, idiomatic expressions, and related words for momentum, like: force, energy, drive, motion, thrust, tide, velocity, angular momentum impulse, impulse, impetus and moment.