Plastic hanging from underneath front of Ford Fiesta?

Whilst parking up in a tricky space earlier in a car park I only slightly bumped into the barrier in front, it was nothing major or bad just a little bump and there seemed to be no damage done. After driving home on the motorway and parking up I noticed a bar of plastic that was damaged and hanging underneath the front of my car. I took a photo which is attached, I'm not great with cars so could anybody tell me what is wrong, whether it's urgent and how to fix it /how much it would be? It's hanging about 2 inches from the floor and isn't causing any issues at the moment. The car is a 09 Ford Fiesta style+.

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