Which is not an assumption about gas particles in the kinetic theory model for a gas? A They collide elastically with the container walls - AQA - A-Level Physics - Question 25 - 2019 - Paper 2

In the kinetic theory model, the assumptions related to gas particles include that they collide elastically with the walls of the container and that their size is negligible compared to the distances between particles. However, the statement 'They collide with the container walls in negligibly short times' is not a standard assumption, as their travel time is typically considered significant due to the velocities involved.