Momentum & Energy


c.o.r. type total
kinetic energy
0 perfectly inelastic decreases to a minimum objects stick together
> 0 > inelastic decreases by any amount all collisions between macroscopic bodies, high energy collisions between subatomic particles
≈ 1 ≈ partially elastic, nearly elastic nearly conserved billiard balls, bowling balls, steel bearings and other objects made from resilient materials
1 elastic absolutely conserved low energy collisions between atoms, molecules, subatomic particles
> 1 > superelastic increases contrived collisions between objects that release potential energy on contact, fictional superelastic materials like flubber
Energy in Collisions