Coefficient of restitution for an elastic collision in 1 dimension

Using conservation of momentum and conservation of energy to show that the coefficient of resitutition for a 1D elastic particle-particle collision is unity. About me: I studied Physics at the University of Cambridge, then stayed on to get a PhD in Astronomy. During my PhD, I also spent four years teaching Physics undergraduates at the university. Now, I'm working as a private tutor, teaching Physics & Maths up to A Level standard. My website: https://benyelverton.com/ #physics #collision #restitution #coefficient #coefficientofrestitution #elastic #kinetic #energy #kineticenergy #momentum #mathematics #maths #math #alevel #furthermaths #science #education