I been looking on google and getting help from several people who are trying to help me, but I just can't understand this. It is to advance for me as of now and I need a example to help show me. But I need this for homework so can someone help and provide formula explaining how this would. Be very appreciated. This is a complete homemade thing so... bear with me. I am trying to calculate the impact force or stopping power (not sure what to call it) or a bullet on an object. I need a function cause variables will be changing nothing is a set one. Variables: Mass of bullet Mass of Object Air Resistance Velocity Force (F=MA) Bullet Weight Diameter of bullet (If that has any effect or usefulness) Density of Object (If that has any effect or usefulness) I've tried making a custom equation, but I was told I just made it so stuff would cancel each other else cause I was thinking what would be a positive effect and offsetting it by a negative effect. Any how would really be nice. Spent many hours on trying to get this to be as realistic as possible.