The collision of billiard balls.

[HeadHurts]

Hi guys, first time in this forum.
seems legit.

I'm in year 12, i have to find or make a EPI (prac) to do with one of these topics.
1. Co-efficient of friction between different surfaces.
2. Strength of nylon/cotton/steel/tin string.
3. Projectile motion.
4. Bending of a beam.
5. The coefficient of restitution of a squash ball.
6. The collision of billiard balls.
7. Centripetal force, acceleration due to gravity/or along inclined.

Im going more towards No. 6, the collision of billiard balls but i can't find anything online.
if anyone could help me find/make a prac it will be very helpful. (it can be really simple)
ill be doing my best to find one for now, thanks.
Steve.

 

[HeadHurts]

still can't find one simple enough...
really need your help guys.

pendulums would be alright.
(momentum/conservation etc)