What are the energy transformations in a car crash?

In a car crash, the kinetic energy of the moving vehicles is transformed primarily into thermal energy due to friction and deformation of the vehicles. Some of the kinetic energy is also converted into sound energy, producing the loud noise associated with the impact. Additionally, the structural components of the cars absorb energy, leading to potential energy changes as they crumple and deform. Overall, the transformation results in the dissipation of energy in various forms, primarily as heat and sound.