Hello, I have a project about a skateboard, it rides on slopes and ramps, but I want it to pick up speed when it goes off the ramp, and when it goes up the ramp, the speed decreases, the skate is like a board skeleton mesh in my character drawing

[RedGrimnir (Grimnir)]

You need to check the moment of time when it goes off the ramp.

You can do it, with a collision or check with a trace , and launch character or add force simply as impulse.

I can be more helpfull if you can demonstrate with a drawing or simply with a video.