# Propulsion synonyms

## Category:

**strong nuclear force**, the

**electromagnetic force**, the

**weak nuclear force**, and

**gravity**.

**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.*

**propulsion**. In this page you can discover 15 synonyms, antonyms, idiomatic expressions, and related words for

**propulsion**, like: force, push, drive, thrust, actuation, momentum, aerodynamics, jet-propulsion, ramjet, gas-turbine and null.