1. The problem statement, all variables and given/known data I wanted to know how this equation is derived. Thanks. 2. Relevant equations [tex] {v_{f}}^2 = {v_{i}}^2 + 2a\Delta d [/tex] 3. The attempt at a solution [tex] v_{f} - v_{i} = \frac {\Delta d a} {\Delta v} [/tex]
We have the two relations: [tex]t=\frac{v-u}{t}[/tex] [tex]s=\frac{1}{2}(u+v)t[/tex] Substitute the first into the second and the deed is done.
Start from: 1. v=vo+at 2. r=ro+vo*t+(at^2)/2 Find t from 1 and replace in 2, do all the algebra and you are done.