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.

Answer:

Yes, the law of conservation of momentum is satisfied. In any closed system where no external forces act, the total momentum before the collision is equal to the total momentum after the collision. While energy may be lost to sound or heat, the momentum is simply transferred between the two balls.