If I’m reading that right, they were going 280 when they hit.
https://www.reddit.com/r/flying/comments/atzdon/atlas_3591_b767_reported_down_near_iah_not/
Aircraft is “Giant 3591”
00:28 - Aircraft checks in on freq
04:02 - Controller gives weather advisory
06:19 - Aircraft calls in asking to go on the “west side” of the weather, but controller says he can’t due to arrivals. They talk over each other.
09:25 - Controller calls for aircraft
10:07 - Controller asks other aircraft if they hear any ELTs
There’s nothing but small pieces of debris where the aircraft hit. The Flightaware data I think is only from every minute or so. It’s not continuous. Another tracking sight showed it going in at 29,000 ft per minute.