# Relative velocities (perpindicular direction)

## Description

The relative velocity (v_A|B) is the velocity of an object or observer B in the rest frame of another object or observer A.

In the case where two objects are traveling in perpendicular directions, the relative speed is given by the shown formula

Related formulas## Variables

v_{BA} | relative speed (m/s) |

c | speed of sound (m/s) |

v_{A} | speed of object A (m/s) |

v_{B} | speed of object B (m/s) |