The math help thread

Use Newton's 3. law:


By that, divide the blocks into two.



Furthermore, we now assume that the left part of the black block has zero mass, and that the right part of the red block has zero mass. What would happen then? They would simply have the same effect depending if the collision's elastic, inelastic or plastic.

That's the very basic part which you will go and use. But what should be assumed? I need more data. Does the blocks have the exactly same mass at any given point? What kind of collision-type is it? (Mostly this.)

What kind of collisions are there...?
For simplicity, assume the blocks have a uniform density.