A gas molecule of mass m moving with velocity u collides at right angles with the side of a container and rebounds elastically.
Which one of the following statements concerning the motion of the molecule is NOT correct?
The force exerted by the molecule on the side of the container is equal to the force exerted by the container on the molecule.
The magnitude of the change in momentum of the molecule is zero.
The change in kinetic energy of the molecule is zero.
The magnitude of the change in momentum of the molecule is 2mu.
