edit2: okay I guess the this is no longer about angular velocity or constant gravity, because I figured both of them out before anybody responded, but now I've got a question about syncing up an actor's orientation with the "angle" function. If the angle of the actor is, say 45 degrees, I want my actor (say it's a pointing arrow) to point in the same direction as its angle.
In other words, I just want some sort of visual representation of the angle. I don't care much how it's done, but I need to see which direction it's pointed.