okay the question asks about the acceleration of a bullet while in the gun barrel
but the only information they give me is the length and the end velocity.
Is it possible to do this.
I have a couple formlas but they all use time and acceleration and I don't know either so I can't solve an equation with two variables
please help

Well...

You know the start velocity (nill)
You know the end velocity (given)
You know the distance between start and end (given)

What more do you need to calculate the expansion?
Just show what you have so far...

:)

.

Well...

You know the start velocity (nill)
You know the end velocity (given)
You know the distance between start and end (given)

What more do you need to calculate the expansion?
Just show what you have so far...

Here is a LINK for you to get some inspiration .... See "acceleration" (http://en.wikipedia.org/wiki/Space_gun)

:)

.

Just use your suvat equations with the info that you know, Cred has already outlined some of the data you have and can use.

Yes, of course it's possible ;)