In any and all collisions of short duration and for which it is true that no external forces act on the collision participants,
A)kinetic energy is conserved.
B)both momentum and kinetic energy are conserved.
C)neither momentum nor kinetic energy is conserved.
D)the relative velocities before and after impact are equal and oppositely directed.
E)momentum is conserved.

Question

Quizplus · Accepted Answer

In any collision of short duration where no external forces act, momentum is conserved. However, kinetic energy is not necessarily conserved, as some or all of the kinetic energy may be converted into other forms of energy such as heat, sound, or deformation of the objects involved. Additionally, the relative velocities before and after impact may not be equal or opposite, depending on the specific details of the collision.

In Any and All Collisions of Short Duration and for Which