Collisions
Just mathematically, we already know that momentum is conserved,
dpTot/dt = 0 pTot = p1 + p2 = constant
In terms of impulse, we can understand this from a somewhat different point of view,
This means that
and, again, we see that
Impulse 1D Collisions Return to ToC, Ch9, Linear Momentum (c) Doug Davis, 2001; all rights reserved