I. If two perfectly hard bodies A, B, impinge against acne another din-ctly, they will either be at rest after impact, or will move on together as if they were one mass. If the momentum of A is ... A _ AAl a B b Ba+Bb Velocity lost by A _a __;=____.
|Title||:||Second American Edition of the New Edinburgh Encyclopædia|
|Author||:||Sir David Brewster|