POLICE SAY - BUCKLE UP --> WHY???? (PART 2)

Part 2 :

In this part 2, let me explain scientifically what happened. This this for anyone interested in the mechanic of crash. Otherwise, just remember to "Buckle Up" that enough!!!

In crash science, the importance principle is what we learned in our physic class, which mainly law of physic from our good old friend, Mr. Newton. The Momentum Law.

What is the momentum law? It is basically says : Every object in a state of uniform motion tends to remain in that state of motion unless an external force is applied to it.

What does it means?... Let go back to the egg and trolley experiment mentioned in part 1. When the egg and the trolley move at some velocity, it will have a momentum (define as "mv"). The momentum will depend on the mass and the speed of the egg and the trolley. The higher the speed the higher the momentum. The higher the momentum the more difficult to stop.

The egg will have the same momentum as the trolley during the motion. When the trolley stop the momentum of the trolley will be zero but the momentum of the egg is still there and this will result in the egg to fly forward and drop down the floor.

1. Egg and trolley momentum = mv
2. Trolley movement = 0 but the egg momentum is still the same.
3. The egg will fly forward due to its momentum and finally hit the floor.

Case of not wearing seat belt :

Similar thing happened when you are involved in an accident. You and your car will have a momentum when your car is moving. But when your car make sudden stop during the impact, the momentum in your body will throw you out of your seat. Your body will bounce back and fort inside the car and hit the hard interior part of the car. This will cause severe injury to your body and internal organ like the egg yolk will spill all over the floor.










Case of wearing seat belt :

On the contrary, if you are wearing seatbelt, during the impact you will be locked to the car. So your body momentum will be same as the car. When the car momentum becoming zero, your body momentum also will become zero. Therefore, you will not be thrown out of your seat as before. This will reduce the risk of injuries...

This what happened...........




Well.... happy driving....... remember too buckle up.... this 2 second of effort can safe your life......

thecrasher........

POLICE SAY - BUCKLE UP --> WHY???? (PART 1)

A lot of people is too ignorance about seatbelt. Many people buckle up because of the laws. Afraid that we will get a summon and need to pay may be 300 ringgit. Right!!!!

But the bottom line is that seat belt is too important to ignore. Why? The answer is very simple. It can be explain scientifically or un-scientifically.

Let me explain un-scientifically first in this part 1.

Our body is like an egg. We have a shell (which is a skin), a yolk (which is our internal organ) and a fluid (which is our tissue).




Imagine an egg sitting on a small trolley without being restraint and it is moving forward. Let stop the trolley suddently.

What happen? The egg will fly forward and fell down, hit the floor and broke the shell. Similarly without seat belt being lockup, during crash, our body will fly forward and hit the hard interior part of the car and cause severe injury externally and to our internal organ.

1. Trolley moving 2. Sudden Stop 3. Broken!!!!


If we buckle up, our body will stay with the car, we will not be thrown forward soo fast and the risk of injury is less. Further more in severe crash cases, especially in the rollover cases, it will prevent us from being thrown out of the car.

Off course, there might still be injury depend on the severity of the crash but the risk of severe injury is lesser.


SO BUCKLE UP PEOPLE !!!!!! IT IS NOT THE LAW, IT IS THE LIFE.......... !!!!


............Watch this very very interesting video .............

WELCOME NOTES

Hello All,

Welcome to my blog.... My blog is dedicate to discussion about crash... It can be any type of crash but since my expertise is on car safety... I can contribute more in this area. I hope that we can share knowledge among us for improve our understanding on this area and take a good precaution to prevent injuries with regards to crash......

Principle of crash is the same for cars, trains, airplane, bump into something, etc but the mechanism is different.

I think that it for now...

Talk to you later........

thecrasher...........