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A comment on Actually, Marty Didn’t Go Back to the Future: Graphing the Train Scene of BTTF3. Parent comment

Re:Actually, Marty Didn’t Go Back to the Future: Graphing th... by ddcarnage on Tuesday November 03, 2015 @11:55PM (#10504684)
Hadn't thought of that! And considering that based on what I calculated in the post he goes off the edge at about 70mph, he probably needs way less that 258 feet right?
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Re:Actually, Marty Didn’t Go Back to the Future: Graphing th... by gohrt on Wednesday November 04, 2015 @12:15AM (#10504741)
The 70mph is horizontal velocity, gravity is vertical acceleration from 0. Total velocity is sqrt(sum of squares). It's unclear how much horizontal velocity the train would lose due to air resistance and due to the unclean launch from the ravine. (Would it fly off the end of the track, or tip off the end and tumble down?)
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