Question

What does it mean by conserved momentum?

Answer 1

it is just that momentum can't be destroyed or created. it just keep transferring from one body to another

let's say a speeding ball hits a a stationary ball and speeding ball stops that means whole momentum of first body is transferred into another body (ideally),

Answer 2

@alcatraz
in elastic collision ke bofore - ke after, also momentum is conserved
but in inelastic collisions, ke is not conserved. is momentum conserved?
momentum is always conserved?