How do I drag and throw?

I had a game which did this a while back but now I can't find it and can't remember how I did it, I've looked around and can only find catapult drag and throws.

I want to throw a physics object with drag and drop so on the drop it forces object it the direction I swiped, I remember it being quite simple I just can't seem to do it now.

Here's a quick example that keeps the velocity consistent between the drag and drop and physics behaviors on release.

For some reason this doesn't work? I had a play around with it and I got it working but it wasn't accurate or receptive. Sometimes it would shoot the wrong way other times it wouldn't at all.

I forgot to mention it can be a touch control rather than drag and drop if that's easier.

I managed to get it working now just had to tweak a few things and ditch the drag and drop idea and use touch