Seat belt advert query..

[lauren84 11]

My husband says the same thing as the op every time the ad is on!

[alchresearch 214]

When there is a crash the seatbelt pre-tensioner fires and pulls your belt tight, so you don't fly forward.

[Heyesey 11]

When there is a crash the seatbelt pre-tensioner fires and pulls your belt tight, so you don't fly forward.

 

Which means you slam at very high speed into the seat-belt.

[alchresearch 214]

How? The tensioner fires and straps you securely to the seat.

 

If it works as it should you shouldn't be able to move an inch.

[Heyesey 11]

How? The tensioner fires and straps you securely to the seat.

 

If it works as it should you shouldn't be able to move an inch.

 

*facepalm*

 

 

We've already mentioned this at least four times in the thread. Are you really this stupid?

 

The body is ALREADY moving at high speed. It was going the same speed as the car. When the car stops, the body hits it; either in the seat belt, in the airbag, or in the windscreen.

[alchresearch 214]

Not as stupid or as ignorant as you seem to be this morning. (I've seen some of your other posts where you are being completely ignorant and disrespectful)

 

If you're strapped into the car seat you cannot move forward. There is no play. The tensioner has already fired and you cannot go anywhere.

[Heyesey 11]

If you're strapped into the car seat you cannot move forward.

 

You're already moving forward, at the same speed the car was going before impact.

[em2007 10]

heres another guess from me.

 

yes, you and the car are already travelling at 30mph. so your body hits the seatbelt at 30mph. the speed is absorbed through the bit of stretch that the seatbelt has, and also through your ribs or pelvis. it also keeps you tight to your seat too so no bouncing.

 

if you had no seatbelt your body would be going 30mph, possibly gaining speed as it moved forward, straight into a very hard surface with no stretch, eg. steering wheel, windscreen, road. all the shock would then be absorbed in one small area, either your head or chest, you would then bounce back at speed, basically shaking your internal organs like a maraca!!

[medusa 16]

Yes, you are already moving forward, but because your body is in equilibrium with the movement and momentum the issue is in bringing your body to a stop in a controlled and safe manner.

 

The safest way to do this is to be supported and for no bits of your body to move faster (or stop faster) than other bits of your body, so the safest way is to remain properly in your seat restrained by your seat belt. If your torso is allowed to move significantly forward after the car has stopped then this is what risks your internal organs because it allows your internal organs to move at a different rate to the rest of your body.

[scotsman1976 10]

The force thrust upon your internal organs and body, is due to the sudden change in speed (de-acceleration), because those sad enough to be like may that enjoyed physics can tell you that Newtons law states that Force = mass x acceleration. The internal organs alone can not sustain the forces that would be exerted upon them, during a sudden impact. The forces that the body endures on sudden impact, are absorbed better through our muscle and skeletal system; however, these alone can not absorb the full impact. This is where the importance of wearing a seatbelt comes into play, as it will adsorb most of the force upon impact, which means less force is exerted onto our weaker internal organs. In brief, the force upon impact needs to be absorbed (another of Newton's Laws) before you and the car come to rest; the seatbelt will take most of the force; your muscles and skeletal system, will take less of the force; and finally your internal organs will only experience a fraction of the impact. If a seatbelt is not worn, then greater and more significant forces are exerted through our fragile bodies, which increases the risk of significant injuries.

[cgksheff 44]

When the car crashes, it will rapidly decelerate within a very short space of time.

A crumple zone will also have an effect.

If you are in a seat belt, your body will also undergo that short period of deceleration before coming to a rapid stop.

 

Without a seatbelt, your body continues travelling at full speed for that short space of time and makes a collision with the front when a period of 'car' deceleration has already taken place and so the deceleration of your body will be increased and more damaging.

 

However, in the advert, 'Richard' hits an airbag which will complicate the comparison even more!

[Zamo 10]

When the car crashes, it will rapidly decelerate within a very short space of time.

A crumple zone will also have an effect.

If you are in a seat belt, your body will also undergo that short period of deceleration before coming to a rapid stop.

 

Without a seatbelt, your body continues travelling at full speed for that short space of time and makes a collision with the front when a period of 'car' deceleration has already taken place and so the deceleration of your body will be increased and more damaging.

 

However, in the advert, 'Richard' hits an airbag which will complecate the comparison even more!

 

This is by far the best and most accurate explanation. Basically, the body experiences less g-force because the deceleration is not as severe.

 

The airbag does make it more complicated and must mean there is less of a difference between the seatbelt and no-seatbelt scenarios.