How do I bounce two edge colliders off one another?

Hello, I am working on a 2D game for a mobile application in which there are edge colliders attached to two different balloons. I am trying to get the balloons to bounce off one another using the edge colliders, but I am a bit inexperienced with Unity and still learning and finding my way around. Is there a way that I could make it appear as if the balloons are bouncing off one another with the edge colliders? Or is there something completely different I should be doing? Thank you in advance!