# Illustration Spaceship flies and has kinetic energy

Get illustration

Share — copy and redistribute the material in any medium or format

Adapt — remix, transform, and build upon the material for any purpose, even commercially.

Sharing and adapting of the illustration is allowed with indication of the link to the illustration.

A spaceship of mass $$m$$, flies through space with a velocity $$v$$. Once a body has velocity and mass, it also has kinetic energy $$W_{\text{kin}}$$, which can be calculated as follows:$$W_{\text{kin}} ~=~ \frac{1}{2} \, m \, v^2$$

This is a formula for the classical kinetic energy, which means: The formula is valid only for velocities significantly below the speed of light.