Question

A molecule in a gas container hits a horizontal wall with
speed 200 m stand angle 300
with the normal, and rebounds with the same speed. Is momentum conserved in the
collision ? Is the collision elastic or inelastic ?​

Answer 1

the answer of this question is elastic

Answer 2

Explanation:

The molecule approach and rebound with same speed. So, the kinetic energy of approach and rebound remains the same. Therefore it will an elastic collision.