If the total kinetic energy and momentum of a system becomes zero after collision, then the collision is
A)elastic
B)inelastic
C)conserved
D)not conserved

Question

Quizplus · Accepted Answer

In an inelastic collision, the kinetic energy is not conserved, but momentum is always conserved in collisions. If the total kinetic energy becomes zero, it means the objects stick together and move as one mass with zero velocity, indicating an inelastic collision. The term "momentum of a system becomes zero" could imply the system's center of mass is at rest after collision, which aligns with an inelastic collision where objects stick together, but it's crucial to note that momentum conservation is a principle that applies regardless of the type of collision. The phrasing might suggest a misunderstanding, as momentum being conserved is a fundamental principle, not dependent on the type of collision.

If the Total Kinetic Energy and Momentum of a System