Conservation of Momentum: A diagram showing two objects colliding, with initial and final momenta represented as p_i = m1u1 + m2u2 and p_f = m1v1 + m2v2, demonstrating that total momentum is conserved.
Diagram illustrating the conservation of momentum, showing two colliding objects with masses m1 and m2, initial velocities u1 and u2, and final velocities v1 and v2, with momentum equations before and after collision.