Question: When Tony gets the shrapnel in the chest, he first pulls apart his shirt, then pulls apart something black and sees the holes in his chest. Is the black thing an undershirt, or some sort of bullet proof vest?
Answer: It's a flak jacket that didn't work as well as he would have liked.
Question: I've never seen them in the movie, but someone is in the credits as "Stan's Girls." I assumed this was Stan Lee, but where (if anywhere) are they in the film?
Answer: They are outside the award banquet he goes to, he calls Stan Lee "Heff" and Lee is dressed like Hugh Hefner, and has a few girls around him.
Question: When Pepper helps Stark replace his power cell, doesn't she accidentally pull out the magnet at the bottom? Wouldn't she need to put it back before putting in the new power cell? Otherwise, it wouldn't be powering anything, and the shards could get into his system.
Answer: The copper coil is left over from when Tony threw together the miniature ARC reactor during his time as a captive. Since the ARC reactor functions as a powerful electromagnet to keep the shrapnel out of his chest, it can be assumed that the copper coil is really just there to act as a residual magnet if and when the main unit needs replacing. Since Pepper pulled it out and Tony didn't have a spare copper coil on hand, he went into cardiac arrest. It's really just there so he doesn't go into cardiac arrest every time he needs to replace his chest piece. I'm sure he pops a new copper coil in there later on.
Question: In real life, would it be possible to build a Jericho missile like the one in the movie?
Answer: It depends what makes the Jericho blast. If it is a real life thing like explosives, then yes, you could theoretically design a missile that launched and then fired submunitions. If it is a fictional thing like "repulsor" power or some other Stark invention, then no, not with current technology. In real life the limits for weapon design include destructive effects but also weight, cost, propulsion, complexity, transportability, aerodynamics and much more.
Question: How did Stane's guards round up the ten rings? They didn't appear to have any weapons when they arrived, and the ten rings appeared to outnumber them.
Answer: Given that Stane was carrying (and used) the small, easily-concealed paralysis device, it may be assumed that his entourage were carrying (and using) the devices, also. They simply paralyzed the 10 Rings guards.
The Ten Rings members were shown kneeling with their hands on their heads, though. They wouldn't be able to do that if they had been paralyzed.
That doesn't negate the probability that Stane's entourage used the paralysis device on a few guards to demonstrate the effect, whereupon the other toady guards simply surrendered.
Question: There is a red flag behind Obadiah while he was "freezing" Reza, and the same flag appears in the video watched by Pepper on Tony's desktop. The same flag / logo was used by Mandarin in Iron Man 3. Was it the same "enemy platform", being manipulated by the bad guys?
Answer: The flag has the symbol of "The Ten Rings" the terrorist group that captured Stark. Which is a real in universe terrorist group in the MCU. Aldrich Killian used the flag for his Mandarin videos to add some credibility to his scheme.
Question: What kind of machine guns were the terrorists using against Tony's Mark 1 armor?
Question: What are the Mark 1 armor plates made of? Would they really provide any protection against bullets? I mean they're just one or two millimeters thick.
Answer: The mark-1 appears to be made of repurposed military armor. This would provide enough protection from the AKs as the armor is layered, but not indefinitely.
Answer: It's made from a iron-copper-magnesium alloy. Magnesium alloys are lightweight like aluminum, but strong like titanium. His suit may be bullet resistant to small caliber rounds, but unlikely to stop larger caliber rounds from piercing it at its thickness, unless he layered the inside with something else. Most metal armor (like on tanks) work by deflecting bullets because of the slant of the armor, which Tony may have incorporated into his suit.
I doubt it would offer protection against black tip bullets since black tip bullets are armor piercing rounds.
Answer: Tony Stark mentions in the movie the armor is made of a titanium-gold alloy. Its a very strong alloy that can stop a bullet.
Question: How did the ten rings the make the two vehicles explode in the scene where the attack Tony and the military? I didn't see any missiles hit them.
Answer: The Ten Rings terrorists probably had C4 explosive buried under the road and exploded them remotely when the vehicles went over them. The terrorists had planned this assault far ahead.
Answer: It's important to remember that Obediah Stane was secretly supplying the terrorists with cutting-edge military technology produced by Stark Industries (much of it invented by Tony Stark himself). The terrorists didn't need "improvised" explosive devices, because they were using state-of-the-art Stark Industries equipment and ordnance. In fact, just a moment before he is mortally wounded by the anti-personnel explosive, Tony is horrified to see "Stark Industries" printed on the bomb casing.
Answer: The lead vehicle most likely ran over an IED (improvised explosive device) that would have been buried in the road like a landmine. It's also possible the IED was remotely triggered by the terrorist waiting to ambush the group.
Question: When Stark and the men protecting the soldiers are attacked by terrorists, the terrorists fire a weapon that fires a lot of rounds, that go through the a jacket, the soldier's body, and the car's door. Does such a weapon exist in real life? Is so, what is it called?
Answer: It's called an anti-personnel device (or anti-personnel explosive) that showers a target area with shrapnel distributed every 2 inches. It's intended to kill every person within its blast radius. The curious thing is that Tony Stark was untouched in the first anti-personnel attack, even though his bodyguards and the HumVee were perforated.
Answer: It could be a manual triggered claymore, small ones are able to penetrate light armor up to 50meters (55yards).
Answer: Later in the scene, Stark realises the terrorists are using Stark Industries weapons. In the Marvel Universe, as is evidenced by the various Iron Man armors/weapons, Stark Industries makes some pretty awesome weaponry.
Answer: It could be armor piercing ammunition, which would go through certain materials, but it's more likely that it was just done for dramatic effect with a few liberties taken on what real world weapons are capable of.
Chosen answer: He is in the scene where Tony Stark is demonstrating the new weapons system to all of the brass.
pross79