Respuesta :

Answer:

When there's no external force, the total momentum of system remains the same before and after collision

Less than the kinetic energy of the system before the collision

Explanation:

Definition of conservation of momentum

: the total linear momentum of a system of particles not acted upon by external forces is constant in magnitude and direction irrespective of any reactions among the parts of the system

Definition of inelastic collision:An inelastic collision is a collision in which there is a loss of kinetic energy.

Brainliest please