Sections Key Equations Key Equations impulse F net Δt F net Δt impulse–momentum theorem Δp= F net Δt Δp= F net Δt linear momentum p=mv p=mv Newton’s second law in terms of momentum F net = Δp Δt F net = Δp Δt law of conservation of momentum ptot = constant, or ptot = p′tot conservation of momentum for two objects p1 + p2 = constant, or p1 + p2 = p′1 + p′2 angular momentum L = I ω ω conservation of momentum in an elastic collision m 1 v 1 + m 2 v 2 = m 1 v ′ 1 + m 2 v ′ 2 , m 1 v 1 + m 2 v 2 = m 1 v ′ 1 + m 2 v ′ 2 , conservation of momentum in an inelastic collision m 1 v 1 + m 2 v 2 = ( m 1 + m 2 ) v ′ m 1 v 1 + m 2 v 2 = ( m 1 + m 2 ) v ′ conservation of momentum along x-axis for 2D collisions m 1 v 1 = m 1 v ′ 1 cos θ 1 + m 2 v ′ 2 cos θ 2 m 1 v 1 = m 1 v ′ 1 cos θ 1 + m 2 v ′ 2 cos θ 2 conservation of momentum along y-axis for 2D collisions 0= m 1 v ′ 1 sin θ 1 + m 2 v ′ 2 sin θ 2 0= m 1 v ′ 1 sin θ 1 + m 2 v ′ 2 sin θ 2 Print Share <a href="https://texascourses.org/index.php/resource/key-equations-6" title="Key Equations" hreflang="en">Key Equations</a> Copy and paste the link code above.
