How To Calculate Deceleration From Speed And Distance Complete Guide

Deceleration is the final velocity minus the initial velocity with a negative sign in the result because the velocity is dropping. But the deceleration is not constant. Next determine the initial velocity.

Velocity is speed in a given direction.

Deceleration v 2 - u 2 2s Where v The Final Velocity u The Initial Velocity s Distance. Working through the same logic with an initial speed v and a deceleration a the final distance d traveled before stopping is d v a v g t v 2 v a v 2 2 a This formula becomes more interesting when you learn a bit more physics because its simple example of the work-energy theorem. If the speed of any car or object is increasing it will be known as acceleration. A way to determine whether deceleration is a part of a scenario is to compare the sign on the velocity and on the acceleration.