In the top row labeled Before Collision, the left billiard ball labeled 3 meters per second approaches the right billiard ball labeled 0 meters per second with a grey arrow pointing from the right ball to the left ball. In the bottom row labeled After Collision, the left billiard ball labeled 1 meters per second approaches the right billiard ball labeled 2 meters per second with grey arrows pointing to the right from both balls. Two balls, each with a mass of 0.5 kg, collide on a pool table. Is the law of conservation of momentum satisfied in this collision? Explain why or why not.