# How to derive this equation

by zeion
Tags: derive, equation
 P: 467 1. The problem statement, all variables and given/known data I wanted to know how this equation is derived. Thanks. 2. Relevant equations $${v_{f}}^2 = {v_{i}}^2 + 2a\Delta d$$ 3. The attempt at a solution $$v_{f} - v_{i} = \frac {\Delta d a} {\Delta v}$$
 P: 595 We have the two relations: $$t=\frac{v-u}{t}$$ $$s=\frac{1}{2}(u+v)t$$ Substitute the first into the second and the deed is done.
 P: 452 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.

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