We have to do a lab in physics where we research and write on real life applications of momentum, the guidelines we have are

Research Assignment: Application of Momentum in Real-Life Situations

Task: Choose any real-life situation where the concept of momentum is involved and include the following:
Labelled diagram.

Explanation of physics involved – refrain from general statements, be specific and precise, do not copy and paste – use your own words.

Discussion of the consequences of the application.

I chose to write on two billiard balls colliding, and i`ve done everything but the last point. I have no idea what it means to discuss the consequences of the applications, and I need to write on multiple.
Please help me.