After some help with a physics calculator and ignoring air resistance -

After determining that with Dr. Xeno aboard, the flying Soviet Captain was moving at a grand total of 3.429 m/s (assuming he moved at 20.574m/22.5~ yards every six seconds) before Jules Drake annihilated him with a lucky shot.

v = 3.429 m/s

degree of launch = 60

horizontal range = 1.03905 m

t = 0.6060 s

vertical height = 0.44992 m

It only took Dr. Xeno 0.606 seconds, with a total movement of 1.03905 horizontal meters (0.44992 m vertically), to return to his initial vertical height (~~72.5 feet, 22.098m~~ I did some trignometry. Turns out he's actually at a initial height of 18.8976m [assuming he picked Xeno up at 5 feet above the ground]). At the height of his arc, Dr. Xeno moved 0.519525 meters horizontally in 0.303 seconds all things assumed equal.

However, to take the calculations for a horizontal launch, we must note:

Dr Xeno's maximum vertical height: 19.3475m.

Dr Xeno's horizontal launch velocity: 1.7145m/s (MORE TRIG)

Acceleration by gravity: 9.8m/s2

So, with all of this in mind, Dr. Xeno moved a total of 4.4459m horizontally (after a 19.3475m drop) in the space of 2.29 seconds. His vertical velocity, before impact with the ground, was roughly 19.4733 meters a second... which is around 70.104~ km/h.

Conclusions:

1) I doubt Dr. Xeno could have survived all of that assuming his elderly condition. Basically, if you crash (and come to a complete stop very suddenly) while moving at 75 km/h, it would be like falling out of a seven-storey building.

2) Math is hard and I probably fucked up. I accept this considering I gave no fucks about when and where I rounded up numbers.

3) Jetpacks are really slow! The average jetpack moves 35 yards in 6 six seconds, which is roughly 5.334 m/s (19.202 km/h). I was cheating with a SUPER SOVIET JETPACK that moved 45 yards every six seconds, speed halved by the weight of Dr. Xeno - around 12.3444 km/h.

4) Iris was 12 yards (10.9728m) away from the jetpack (horizontally) when the Captain was killed. Considering it took 2.29 seconds for him to fall, Iris would have been able to move 4.188~ meters before Dr. Xeno returned to planet Earth. If she was lucky enough to roll a 6 on her d6 for running, she would have been able to move 8.376 meters before the inevitable happened (which would still all be for naught, considering Dr. Xeno's flying, screaming body would still be moving horizontally).

lol.