Here I'll bull shit for you. For initial velocity do like 35 mph on a 25 degree pitch, I don't know what the horizontal and vertical velocitys would be and it has been too long since I have done physics so I don't feel like finding out but if I remember right it is pretty simple. So ya 35 for initial, maybe like 3-4 seconds from right before he hits the tranny of the jump to the landing. I would just throw out a distance of like 45-55 feet from the tranny to the landing, and I donno maybe 25 mph on a 35 degree pitch for the landing.
I don't know if that helped you much but I figured I'd try. And for a pic just look on Freeze or Freeskier for a sequence of a 40-50 footer, I am sure there are plenty.
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