When talking about forces experienced by your body, we are talking about forces that are opposed. When I'm standing on the ground, 1g of force is being applied by gravity and 1g of force is being resisted by the ground. I feel pressure on my feet and my body feels that pressure transmitted though its structure to my brain resting in my skull. When I am in freefall, 1g of force is being applied to my body, with some small portion being resisted by air moving by, unless I'm in a structure blocking the air moving around me, such as the vomit comet. So I experience 0g. Centripetal force on a roller coaster ride can apply more g's, which are counteracted by the structure of the roller coaster causing me to feel pressure. Similarly, slamming into a cliffside at 50 km/h will cause very high g's as my body decelerates from 50 km/h to 0 km/h in a few 10s of centimeters in a time span of less than a second. F=ma or F= 1/2 mv^2^.

N.B. you can experience 0 G on earth but only when you're pushed up and suddenly let go for a brief moment (swings, airplanes diving or roller coasters for example)

Edit: Thats why F1 drivers for example experience 50+ G during a high speed impact

Because the articles mention it's the G-forces.

Where does either article say that?

Falling out of an airplane is 1G...

And if you hit the ground, that's pretty much all of it.

Disneyland had consultants come in and literally said "why are you paying so much for safety staff, you haven't had any accidents". That literally happened. The disconnected mind losing stupidity is insane to me. Disney then cut the budget of their safety teams.

Similarly, I have been on several flights. Which is why I expect my pilots certification any day.

Like, you found one metric and think it's everything, which is just wildly uninformed.

And instead of actually a question to actually find out if you're missing someone, you're trying to start a slap fight about it.

In fact even 1g can kill you, e.g. when being suspended for a long time in inapropriate safety harness.

And it is not enough that the device is safe enough for average person. It must be safe for practically anyone that gets in. Rollercoaster users do not go the same health checks and training as fighter pilots (yes, they are trained how not to get killed by g-force).

I think the bigger smoking gun is the number of identical injuries, rather than anything from the numbers. This coaster was passing safety inspections, so the injury causing parameters are probably pretty uncommon.

No mention of 4G in either article, so no idea why you brought that up.