### Initial kinetic energy of truck was lost during collision

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Assume that a cement truck with a mass of 10,000 kg hits you while you were stopped at a traffic light, and that you are driving a Yugo with a mass of 750 kg. If the truck was traveling at 15 mph and the crash makes you stick together (you and the truck have the same final velocity), what is your final velocity? Ignore friction with the road. If the crash impact took 0.2 s, what was your average acceleration? Convert it to units of g, the acceleration of gravity. Solve the previous problem assuming you are in the cement truck instead of the Yugo. In which vehicle would you rather ride out the crash? Why How much kinetic energy was lost during the collision? What percentage of the initial kinetic energy of the truck was lost during the collision?

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