# Extremely simple question, but not for me!

1. Jul 31, 2007

### Tiplerfan

I'm currently studying Kinematics but I've been out of H.S. for nine yrs. now. I know this is more of a math problem but could someone pls. show me how ;

a=(vf-vi) / t can be manipulated to find vf, as vf = vi + at

Much appreciated!!!!

Last edited: Jul 31, 2007
2. Jul 31, 2007

### hotvette

Welcome to the forums.

I think your equations aren't quiet correct. Shouldn't they really be the following?

a = (vf - vi) / t

vf = vi + at

3. Jul 31, 2007

### exi

I think that's what he's got.

Like this:

$$a = \frac{(v_f - v_{i})}{t}$$

$$at = v_f - v_i$$

$$v_f = v_i + at$$

4. Jul 31, 2007

### Tiplerfan

Thanks alot..simple I know but you forget these things if you don't keep using them...Thanks again

5. Jul 31, 2007

### exi

No problem - and sure, it happens

6. Jul 31, 2007

### hotvette

He edited his post and corrected the equations...

7. Aug 1, 2007

Oh.