Stop driving that car immediately until you find out what the problem is! One or more of the suspension pieces are either bent, or broken, and it is possible that the wheel could turn in any direction while driving, causing a major safety issue.
I was an auto mechanic for a few years and I've seen lots of cars come into a shop with loose wheel hubs that could be turned in any direction by hand, because of loose or broken suspension pieces. If this was my car, I would lift it in the air and check to see what parts were bent/broken and replace them before I thought of driving it again. If I was uncomfortable with doing this, I would either get the car towed, or drive very very slowly on the right lane to get the car to a shop that could fix the issues.
It would be very hard to guess over the internet as to what parts could be broken since it depends on where and how the tire was hit.