How to make actors fall?

Yes, you can make sprites follow physics;
Take a look here: Applying 2D Physics | Unreal Engine Documentation

First of all, i am a beginner at Unreal Engine. I am creating a 2D side scroller game and want to add an actor which is a “falling rock”. So i created a sprite for it, and an Actor Blueprint with the rock sprite as root element. If i drop this blueprint above the ground it won’t fall.

is there a way to make this blueprint obey the engine’s “laws of physics” so the rock falls until it hits something with collision?

Thanks, don’t know how i missed it. (Te devo uma cerveja)