To understand momentum, compare it to the force of gravity as you throw ball up in air, or the rebound force of the ball if you throw the ball and it hits the ceiling and bounces back faster.
(it; bounces back faster; ) (you; throw; ball; up) (you; throw; the ball) (it; hits; the ceiling)
it you you it
bounces back faster throw throw hits
ball up
the ball
the ceiling