A Baseball Flies Through An Open Window And Collides With A Vase. The Momentum Of The Ball And Vase After The Collision Is? More Less Same Not Related To The Momentum? _____.

In a perfect, frictionless system the combined momentums of the ball and the vase would be equal to the momentum of the ball before the collision.  Because this is not a perfect system the combined momentum is less then the momentum of the incoming ball before the collision.