Can someone teach how to solve formula manipulation/transformation in Physics??

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- Nov 5th 2007, 01:50 AMdivinewisdom0218Help, urgently needed in physics
Can someone teach how to solve formula manipulation/transformation in Physics??

- Nov 5th 2007, 03:34 AMtopsquark
- Nov 5th 2007, 05:25 AMdivinewisdom0218E.G. S=Vot + 1/2gt^2 = Vo=S - 1/2gt^2 / T
Problem no.1: from the equation, A=at+v, determine the formula for a

Problem no.2: S=Vo t+ 1/2 at^, for Vo,a

PROblem no.3: v= Vot + at^2, for Vo,a - Nov 5th 2007, 09:14 AMtopsquark
You solve these the same way you would solve them if the A, t, and v are just numbers (which in reality they are.)

Step by step:

$\displaystyle A = at + v$

$\displaystyle A - v = at + v - v$

$\displaystyle A - v = at$

$\displaystyle \frac{A - v}{t} = \frac{at}{t}$

$\displaystyle a = \frac{A - v}{t}$

For $\displaystyle V_0$:

$\displaystyle S = V_0t + \frac{1}{2}at^2$

$\displaystyle S - \frac{1}{2}at^2 = V_0t + \frac{1}{2}at^2 - \frac{1}{2}at^2$

$\displaystyle V_0t = S - \frac{1}{2}at^2$

$\displaystyle \frac{V_0t}{t} = \frac{S - \frac{1}{2}at^2}{t}$

$\displaystyle V_0 = \frac{S}{t} - \frac{1}{2}at$

You solve for a.

-Dan