Quoc Tran Anh Le Coordinator
31/07/2018 at 02:24-
Tôn Thất Khắc Trịnh 31/07/2018 at 07:57
1 second before crash, each of them will need to travel 1 second until they trash
Quoc Tran Anh Le selected this answer.
So #1 has to travel 15 mers, and #2 has to travel 25 mers, so the distance will be 40 mers