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How to derive this equation 
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#1
Sep410, 10:28 AM

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 [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] 


#2
Sep410, 10:34 AM

P: 623

We have the two relations:
[tex]t=\frac{vu}{t}[/tex] [tex]s=\frac{1}{2}(u+v)t[/tex] Substitute the first into the second and the deed is done. 


#3
Sep410, 10:40 AM

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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