Topic > s are traveling along a highway at 100 km/h in opposite directions. Both drivers are tired from driving all day and cross the yellow line and hit head-on. Accident! The driver of car A remained inside the car and suffered a broken rib due to the impact with the steering wheel. The driver of Car B, however, is found on the hood of Car A and is pronounced dead at the scene, the cause of death being a severe case of disobedience to the laws of physics. Although both cars were traveling at the same speed, one driver died while the other survived. It seems like a complicated and difficult thing to explain and to the inexperienced person it may seem that driver A simply had luck on his side, however this is not true. Using knowledge of basic physics, I hope to explain why the outcome for each driver was different and could have been avoided. Sir Isaac Newton was the first man to explain what happens in a collision even before automobiles were invented. He proposed the idea that a moving object will continue to move with the same speed and direction unless an unbalanced external force intervenes. His theory is better known as the Law of Inertia. The driver of car B was not wearing a seat belt and was consequently not attached to the body of the car. According to Newton's first law and object, the car and its occupants were moving until they hit an external force, car A. When the collision occurred, the car and its cargo changed motion and direction . However, since driver B was not wearing his seat belt, he continued at the same speed and in the same direction as the car before the accident. Driver B flew through the windshield and onto the hood of car A. The windshield and c... in the center of the card... large. With a crumple zone, much of the kinetic energy is transferred into heat and sound energy, resulting in much less force being applied to the car and its passengers. With a better deformation zone comes an increase in collision time which results in a large decrease in force. Other safety features being designed include detachable rods, collapsing steering columns and side airbags. Each of these new elements is created to improve passenger safety by carefully observing the physics of collisions and using Newton's three laws of motion. I hope this information has given you a better understanding of what happens in a car accident and given you enough reasons to obey speed limits and always wear your seat belt while riding in a vehicle because remember that it is not only the law, it is the law of inertia!