LAUSR

At the simplest level, the physics of adhesion can be modeled with perfectly inelastic collisions. Let us recall this notion by considering the example of two point masses in R that each move with constant velocity until they collide. To fix ideas, we assume these particles have respective masses m1,m2 > 0 and velocities v1, v2 ∈ R. Upon colliding, these particles undergo a perfectly inelastic collision provided they merge to form a single particle of mass m1 +m2 and the resulting particle travels with velocity v