Using velocity in Flash?

I've never used velocity in a Flash animation before, but am trying to learn about it. As an example, having text move across the screen at a certain speed and then slow down as it nears its destination– that sort of thing. Is there an easy way to implement this? Maybe I'm just not searching for the right terms, but I'm having trouble following the one or two tutorials I have been able to find.

Thanks,
m19