The kinetic theory assumes that collisions of gas particles are perfectly elastic. what does this statement mean?

For example: if a car collides head first into each other, they would just kinda stay in that same position that they collided in because they are not elastic. But since gas particles are elastic, they would just bounce right off of each other and walls as if they didn't hit anything.

The answer to this will be from your lab notes/procedure. it would be best to ask another student who participated in the lab as we do not know what was done, what enzyme or if the temperature is celsius or fahrenheit. if i were to guess though i'd say the rate stopped due to enzyme denturing at high temperature