Tuesday, October 4, 2016

NEWTON'S THREE LAWS IS QUITE SUFFICIENT TO UNDERSTAND CAR COLLISIONS.

The amount of force that causes an accident is largely dependent on Newton’s 2nd and 3rd laws, i.e. F=MA, and For every action, there is an equal and opposite reactionish, respectively. Newton’s 1st law, Every object in a state of uniform motion tends to remain in that state of motion unless an external force is applied to it, explains why passengers in cars are thrown about in a collision, which usually results in a sudden acceleration or deceleration. Factors that affect the degree of damage to the car and injury to passengers are the hardness of the car body, the initial cruising speed of the car, angle of collision ( from where does the car impact on to), the design of the car, the weight of the car, and body mass and position of the passengers of the any car or truck or van or motorcycles.or bus.
1. The harder the anycar body, the greater the rate of acceleration or deceleration on the whole, for the car. A greater acceleration for the same mass results in greater force ( F=MA), which would mean passengers of the car would be subject to more violent jerking and might possible sustain more injury, even though the car would have less damage. Likewise, the softer the car body, the more damage the car would sustain. This would mean the car body would crumple up more and a slower rate of acceleration or deceleration on the whole for the car, resulting in less violent jerks of passengers, meaning less chance of injury. Of course, if the car were too soft, passengers would be crushed to death by the impact.
                                                                                                                                  The faster the initial cruising speed of the car's, the greater the impact felt. This is explained by 3rd law. If a car were to crash into a brick wall, the brick wall would exert an equal and opposite pressure on the car, which is what causes the car to crumple up and throw the passengers about. For a slower initial cruising speed, the less the force acting on the brick wall and since an equal and opposite reaction is acted on the car, the lesser the force crumpling up the car.

 For head-on and 90 degrees car crashes, front and side airbags would offer the greatest protection and hence minimize injuries sustained by passengers.

However, for 45 degree crashes, meaning impact from the corners of the car, airbags tend to cover less of the areas in which passengers are thrown at, meaning passengers might bump into hard windows are metal frames of the cars and probably more severe injuries.

Design of the car is a complicated aspect.

Recent technological innovations like seatbelts, airbags, impact-absorbing side-panels, front-and-rear head restraints, impact-absorbing bumpers and interiors with no sharp edges have all contributed to less injury sustained by passengers during car collisions.

The greater the weight, or mass, of the car, the greater the forces dealt.

This is because of F=MA, meaning if the car crashing into a stationary car were very heavy as compared to the stationary car, the stationary car could be sent flying. However if the roles were reversed and the car crashing into the stationary car were much lighter than the stationary car, the stationary car would not sustain much damage.

If the passenger of the car were very light, he or she would have a higher chance of being thrown out of his seat than if he or she were a heavier person, as can be explained by F=MA. For the same force applied on the person, if he or she were heavier, meaning greater mass, the acceleration would be less, based on F=MA. Likewise if he or she were lighter, for the same force applied, the acceleration would be greater. The center of gravity of the person would also affect how much he or she is jerked about during collision, the relationship being that a person with low center of gravity would be more stable in his or her seat, while a person with higher center of gravity would be less stable in his or her seat. Center of gravity is related to height above the ground, and mass, meaning to say, in layman terms, a tall person would sway about more than a short person, and a heavier person would bounce around less than a light person.
I draw out a theoretical circumstance to show the computations. 

An auto (An) of 1000 kg going at a steady speed of 100km/h crashes into another auto (B) additionally of 1000kg and going at a consistent pace of 100km/h the other way of the principal auto. There is 1 traveler in both the autos and they both weigh 60kg each. After the crash, both autos were uprooted 10 meters from the purpose of impact in 2 seconds 

Given this, as a result of F=MA, the power that every auto slammed with is [1060 (10/2) ] N, which is 5300N. The traveler of every auto, would consequently encounter 5300N of forward force before being yanked back by the safety belt. 5300N of power on any individual is not a little sum, henceforth both people may manage cerebrum discharge by virtue of the sudden development of the head. The head would move the most on the grounds that it is uttermost from the support which is the lower body strapped to the seat by the seatbelt. The airbag would presumably pad the head and moderate its sudden quickening forward and in reverse by some amount, but 5300N would probably still lead to, at least a broken nose from impact into the airbag. The ensuing snap back into the seat might be hard enough to injure the spinal chord of the passenger, and all this is assuming there are no sharp exposed metal pieces from the crumpled and twisted car metal to cause abrasions, lacerations and internal injury.

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