Another important concept is impact force.
https://sciencing.com/calculate-force-impact-7617983.html
I have given up trying to explain physics to the "jet fuel cannot melt steel" crowd.
I said I have given up explaining it. But if you're really interested in finding the truth look up column and slab construction, impact force, and then, if your mathematics is good, look up impulse. All of these together would explain the collapse, including the puffs of dust in the gifs I've seen here.