Answer:
his type of shock is called inelastic
Explanation:
This exercise is for vehicle crashes, which corresponds to exercise is momentum conservation.
We must begin by defining a system formed by the two cars so that the forces during the crash have been intense and the moment is preserved.
Looking for the moments
initial. Before the crash
      pâ = mâ vââ
final. After the crash
      p_f = (mâ + mâ) v
the conservation of the moment is written
      pâ = p_f
      mâ vââ = (mâ + mâ) v
This type of shock is called inelastic and has the characteristics that the kinetic energy is not conserved.