# Deceleration

Deceleration, abbreviated as d, is the rate of change of velocity, this is the opposite of acceleration.

## Deceleration formulas

\(\large{ d = \frac {\Delta v} {t} }\) | |

\(\large{ d = \frac {v_f \;-\; v_i} {t} }\) |

### Where:

\(\large{ d }\) = deceleration

\(\large{ \Delta v }\) = velocity differential

\(\large{ v_f }\) = final velocity

\(\large{ v_i }\) = initial velocity

\(\large{ t }\) = time in which the change occures

Tags: Equations for Velocity