Not unless you jail break. The iPad's operating system, iOS retains a very tight control over what programs can and cannot do. It limits the interaction that programs can have and what control - if any - they can have over the operating environment. So it is not possible for one app to close or open another, nor for apps to interact - except in a very limited sense and that is very strictly controlled by iOS. Although this imposes certain limitations - such as not allowing the sort of functionality that you're proposing here - it does have many advantages, not least of which is that the iPad cannot get a virus.
Tim