Law of Conservation of Momentum Explained with Diagram #180921 (License: Personal Use)

This diagram depicts an elastic collision between two masses, m₁ and m₂, moving along a straight line before and after impact. The scalar equation m₁v₁ + m₂v₂ = m₁u₁ + m₂u₂ expresses that total momentum is conserved when no external forces act on the system. Velocity vectors indicate direction and magnitude changes post-collision.

Used in physics education pages, online textbooks, or interactive lessons explaining classical mechanics; matches user intent to visualize and understand momentum conservation in 1D collisions.