Collision between spheres: general result

Deriving general vector expressions for the velocities of two smooth spheres following a collision. We include both elastic and inelastic collisions, by allowing for an arbitrary coefficient of restitution. Using the zero-momentum frame allows us to simplify the maths a little!

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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.

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