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AlJameson64 t1_j5fl1sn wrote

In the simplest physics of a a front-end collision with an immovable object, the baby would go from resting point to 90 degrees at the speed the car was travelling; that's true. However, now the baby has angular momentum equal to that speed, and nothing would stop it rotating at the 90-degree point. If there's enough distance from the anchor points to the roof, it would spin all the way around, repeatedly until air resistance and friction slowed it to a stop. If not? Yeah, it would stop at the roof of the car.

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dasookwat t1_j5g3laq wrote

this would imply a theoretical instant stop situation, where the car it self
and whatever it hits, would not deform. If there's any crumpling of things going on, the car would not stop in an instance, and instead slow down really fast. this compensates for moving over the 90" point depending on how much time it takes for the baby to reach the 90" angle, vs the time it takes the car to stop.

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