radial velocity

Math Formula Information

Formula: ${\displaystyle v_{r}={\vec {v}}\cdot {\vec {e}}_{r},\quad {\vec {e}}_{r}={\frac {\vec {r}}{\left|{\vec {r}}\right|}}}$

Name: radial velocity

Description: component of the velocity in radial direction

Elements of the Formula

radial velocity	${\displaystyle v_{\mathrm {r} }}$	component of the velocity in radial direction
velocity	${\displaystyle {\vec {v}}}$	rate of change of the position of an object as a function of time, and the direction of that change
unit vector	${\displaystyle {\vec {e}}_{\mathrm {r} }}$	vector of length one
position vector	${\displaystyle {\vec {r}}}$	vector representing the position of a point with respect to a given origin and axes

Data Source

https://www.wikidata.org/wiki/Special:EntityPage/Q240105