In this video Applications Engineer Magnus Whittall shows us how to create a simple multibody part explode, this feature was introduced in SolidWorks 2013.
He also shows a work around for when attempting to insert a part into an assembly and view the multibody explode.
For more information about SolidWorks and Solidtec please check out the links below
http://www.solidtec.com.au/
https://www.youtube.com/user/SolidtecAU