yeah i get what we're doing and all, but my teacher want me to derive this formula. I'm suspecting it has something to do with the glass/steel ratio and the displacement vectors. Need mathematical proof D:
Homework Statement
In this exercise we used steel and glass balls to calculate and prove the conservation of momentum in elastic collisions. I had to prove how momentum is conserved through displacements vectors and right triangles. All that stuff is easy and I got it. The last question is...