When a car falls into the sea, why can t I open the door?

Because the pressure inside and outside the car is the same, the door cannot be opened.

The difference between internal and external pressure leads to the inability to open the door.

Because the pressure inside and outside the car is different, the door cannot be opened.

When the car falls into the water, the water cannot flow into the car quickly due to the good sealing of the car. Under the action of water, there will be a pressure difference between the inside and outside of the car, and the pressure of the water will tightly "fix" the door, and the door cannot be easily opened at this time.

Because the atmospheric pressure in the car and the water are different, and the water will squeeze the air out of the door, so that the door cannot be opened.

We found a car with two people in it, real people, of course. Find someone to push the car into the water, look, look, the car fell into the water, because the engine is heavy, so when it sinks, it's nose down and tail up.

Because of the air in the cabin, the pressure difference between the inside and outside causes the force of water to be exerted on the door of the car to reach 150 kilograms.

This is because the water pressure outside the car is greater than the air pressure inside the car.

This is due to unequal pressure.

This is because the water pressure is much greater than the air pressure inside the car.

If the car falls into the water, whether the door can be opened depends on the situation

1. The car has a certain water-closing performance, once the car is flooded, the first thing the driver should do is to immediately untie the seat belt, and then immediately open the electronic central lock, in case the door circuit fails. If the crack has just accumulated water, you must open the car window in time and open the car door to escape with all your might. Don't panic if you mistakenly take the source past this point in time.

2. After the compartment enters the water, because of the front engine, the front of the car is downward, and the rear of the car is upturned. The whole water injection process generally takes half an hour, and in the process of gradual sinking, the body gap will continue to enter the water, and when the internal and external pressure is equal, the water level in the cabin will no longer rise. When the water level is no longer rising, take a deep breath and open the doors or windows to escape.

Self-rescue: If the door can't be opened, you can use a car repair tool or wrap clothes around your hands to break the side window glass of the car (the front windshield is laminated glass, which is almost impossible to break in the water), if you can't find a sharp object in the car for a while, you need to pull out the seat headrest, use the steel plug at the rear end of the side window to slam it, and then swim out of the side window.

When the car falls into the water, the door cannot be opened from the inside at first, and it needs to wait until the water is almost submerged before it can be opened from the inside. As the vehicle sinks, the water surface floods the window door, the car circuit fails to enter the water, and at the same time, the water will pour into the car along the gap between the doors, causing a huge pressure difference between the inside and outside, causing the door to fail to open.

At this time, you can use hard objects such as safety hammers and anti-theft locks to hit the edges and corners of the glass, and when the side windows are broken, the broken glass will be washed into the car with water, so pay attention to avoid scratches. The doors won't open, waiting for the opportunity to escape. Due to the gradual sinking process of the body, there will be continuous water ingress, at this time the water flow is large, and it is difficult to escape, until the internal and external pressure is equal, open the door to escape.

If the water does not fill the car, the door will not open--- this is because there is air in the car, and the pressure difference between the inside and outside causes the force exerted by the water on the car door to reach 150 kilograms, of course you can't open it. When the water fills the car, the pressure difference between the inside and outside is balanced, and we can easily open the door as if we were in the air.

How could the man be drowned, and wait until it was finally filled with water? To put it simply, this is because you desperately try to open the door before the water fills the carriage, and the manuscript bucket ends up running out of your physical strength and oxygen, and when the water overflows your head, you can't support it for a few seconds, so you hang up quickly, and it takes a certain amount of time to wait for the water to fill the carriage.

Open the door before the water overflows the door, although there is pressure at this time, but the pressure is not at its maximum, if you are strong enough. Of course, there is a tipping point here, that is, when the water fills the door halfway through, it is your penultimate chance, otherwise you will not be able to open the door again with your strength "before the water fills the car after it has overflowed the door", of course, you have to hold on until the water fills the car and conserves your stamina and oxygen before you have one last chance.

Just roll down the windows and get out of the window. Okay, so let's test this statement, and the car was pushed again, and it was really unlucky, and it was pushed down again. Soon, the water filled the car, and at this time, whether we were hand-cranked or electric Mori Keizao, the windows were not moving, and in the same way, the pressure on the windows was 150 kilograms, and you still couldn't open them.

However, this test also illustrates the fact that the electric device does not immediately fail when underwater, and you can still use it. If we fall into a water that is not very deep, we can also try to shake the glass off before the water overflows the car door.

When the water level is high, the outside water pressure is greater than the pressure inside the car, and the pressure difference between the inside and outside causes the water to exert more force on the door, so it takes a lot of effort to push the door. At this time, for the average female and male car owners with insufficient strength, it is indeed difficult to push the car door, and it is not excluded that there will be a situation where the door cannot be opened.

There is also a situation that when the vehicle falls into a relatively deep water, the body will continue to sink, and at this time, people will not be able to exert force, so it is difficult to push the car door. ”

When the car enters the water, it is subjected to the pressure of the water, which is proportional to the depth. Only when the water level submerges the inside of the car, and the inside and outside are close to isobaric, will the people inside the car have a chance to open the door.

There is pressure in the water, and the door lock of the senior car is electronically controlled, and the computer board fails after the water enters.

The water has pressure, and if you force it on, you can't deal with it.

Because of the high water pressure at the surface.

This is because there is air in the compartment, and the pressure difference between the inside and outside causes the force exerted by the water to exert on the door to reach 150 kilograms, and of course you can't open it.

The reason for the difference in air pressure between the inside and outside, f=ps, the water pressure outside is significantly greater than the air pressure inside the car, and when the water fills the cabin, the pressure difference between the inside and outside is balanced, and then we can easily open the door as if we were in the air.

The difference between internal and external pressure leads to the inability to open the door is an important reason for not opening the door,Secondly, many cars are now only electronic central locks,It is also a very important reason for the short circuit of the circuit after the vehicle enters the water and the door cannot be opened,Therefore, many escape skills in the TV when the vehicle falls into the water, it is recommended to unlock the door and lower the car glass as soon as possible,Prepare for the escape behind。

Have a hammer in the car where you can easily reach it, and you can use it to smash the windows open when you have a situation.

The pressure (resistance) force of water is much greater than that of air, and the car opening the door in the water is like pushing a wall of water, which is difficult to reach by manpower.

I understand what you mean, is it that the water pressure is too high, so that you can't open the door from the inside!!

Let me tell you, when the car falls into the water, if the vehicle is closed, the car will not sink to the bottom of the water all at once, you can't panic at this time, generally speaking, the head of the vehicle (that is, the engine position) will go down, at this time the front two doors basically can't be opened, but the back two doors can be opened, but you must not open it, because if you open the door, the water will immediately pour into the car, causing the vehicle to sink rapidly!!

The correct way is to open the rear door window (even if the vehicle is flooded, the electrical part will not fail immediately), climb out of the window one by one, and do not panic.