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I feel all new drivers should take a careful look at the physics behind a car crash. I also realized, after seeing this video, that most young drivers do not have a lot of money so they buy old cars without the new tachnology that has gone into crumple zone and airbag design. They are the ones most in need of it. Basically, before a car hits a non moving object, such as the concrete barrier, the car has kinetic energy (1/2 its mass times its velocity squared). Since energy is never lost but just transformed into other forms, at the moment of impact, some of this energy goes into deforming the crumple zone of the car. Some energy is also transformed into heat and sound energy. A bunch of the car's kinetic energy is used in moving the concrete wall and some more goes into the rebounding motion of the car. So, based on this, I initially chose the Smart car over an older, larger model because it weighs less. That means it has less mass and thus less kinetic energy to begin with. I was really impressed with the Smart car's crumple zone design that allowed the energy to go into the non-essential areas (sides, bumpers, roof etc.) and leaving the passenger area more or less intact. It did leave the passenger area more intact than the other car which was heavier. The airbags within the passenger area further helped to cut down the kinetic energy of the passenger by deceasing the distance the body moved after impact. If one can decrease the distance then that decreases the velocity. According to the formula if the velocity is less then the kinetic energy would be less. Despite this, according to the video the passengers would not survive because the organs could not take the forces acting on them. However, overall I would pick a larger, new model car with multiple airbags and crumple zone technology because there would be more distance and thus more time for the kinetic energy to transform