# Not really a question, basic physics instructions (book error?)

1. Jul 25, 2009

### Raizy

In this pic: http://img268.imageshack.us/i/imgp2719d.jpg/

I couldn't follow what's in the red box. I just hope anyone on here could look through it and tell me if there is some error in there. If not, then I feel stupid.

2. Jul 25, 2009

### songoku

There is no mistake in that picture

$$a = \frac{\Delta v}{\Delta t}$$

3. Jul 26, 2009

### Raizy

Why is it squaring delta t all of a sudden?

4. Jul 26, 2009

### cepheid

Staff Emeritus
You can see from the very first line in that rectangular box that we have $\Delta t (\Delta t)$.

5. Jul 26, 2009

Ok, got it.