Having Trouble with Solving a Laplace Integral? Any Pointers?

[chief10]

Homework Statement

I've attached an image of the question

http://i48.tinypic.com/f0t0m8.jpg

Homework Equations

The Attempt at a Solution

can't seem to make it work with the inverse - i can't implement G(s) .. any pointers on getting this solved would be great guys and girls

thanks a lot

 

[hedipaldi]

Attached.

 

[chief10]

thanks a lot mate

i'll give that a look and post back