Subjects/Basic Physics/Linear momentum, impulse and collisions/Conservation of linear momentum7. Linear momentum, impulse and collisionsConservation of linear momentumIn 7. Linear momentum, impulse and collisionsFormulaCopy LaTeX∑pi=∑pfConditionsnegligible net external impulse.Related formulasRelatedPerfectly inelastic 1D collisionm1v1i+m2v2i=(m1+m2)vfOpen formulaOpen in sectionRelatedElastic collisionm1v1i+m2v2i=m1v1f+m2v2fOpen formulaOpen in section