I would expect to see the wall bounce off the plane ..

I expect that the circular frame of the airplane be off a higher structural integrity than simple aluminum. But steel and concrete are fairly dense and if large enough to "completely encompass" then it wins against the hull of the plane.

An interesting science experiment is to hold your hands with the fingers interlocked as I'd your are praying. Turn your hands upside down and open your palms keeping the fingers together. Place an egg lengthwise between your palms and squeeze. It is very hard to crush that egg. It can be done but it takes a lot of pressure. Turn the egg sideways and it crushes easily.

If it encompasses it, I imagine it would have to be pretty damn high. Planes are made mostly of aluminum, so steel and concrete win, speed be damned.

I can't get past the local airport part. There's not much going on they're right now. I'm having a hard time picturing it.

I think that what you are supposed to spot is that hight and speed at impact are one of the same. But as MarvelAnn points out there are too many variables, and does the wall fall vertically, or like most walls by falling over. If this is supposed to be a smart trick question it could be much better framed, this is just a muddle. Sorry to be harsh but, "could try harder".