This weekend the soccer team played a preseason game against Kalani. I was playing very poorly so coach benched me. As i sat on the bench and watched the game, i thought about physics and how i could turn soccer into yet another physics journal. When i got back into the game, it hit me. Literally. A ball bounced over my head and as i turned around to chase it, a Kalani forward hit me in the back. I fell forward and he landed on me. At first i was angry, but then i thought, "sticky collision!" When the kalani player hit me, i was standing still, facing the same direction as him. He had mass and velocity (and therefore momentum) which was transfered into me during the collision. After the collision, we both moved forward with the same velocity because he was on my back. Momentum is conserved in this (and every) collision, and this can be modeled in the equation: m1v1 + m2v2 = v(m1 + m2).