Question
Which of the following statements is true about an inelastic collision?
  1. Momentum is conserved, and kinetic energy is conserved.
  2. Momentum is conserved, and kinetic energy is not conserved.
  3. Momentum is not conserved, and kinetic energy is conserved.
  4. Momentum is not conserved, and kinetic energy is not conserved.
Question by OpenStax is licensed under CC BY 4.0
Final Answer

(b)

Solution video

OpenStax College Physics for AP® Courses, Chapter 8, Problem 35 (Test Prep for AP® Courses)

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Video Transcript
This is College Physics Answers with Shaun Dychko. An inelastic collision means that some of the kinetic energy is lost in the system and it's probably turned into heat which becomes external to the system. Momentum is conserved because it doesn't -- there are no external net forces acting on the system. So B is the answer.