人在船上走,船在水中行,这是动量守恒定律应用中常见的人船模型.在人船模型中,忽略水的阻力,因系统的初动量为零,故人和船的运动情况是人快船快,人慢船慢,人停船停.运用发散思维,可将“一人一船”模型推广到“二人一船”模型. The person walks on the ship and the boat moves in the water. This is the common model of the ship in the application of the law of conservation of momentum. In the model of the ship, the resistance of water is ignored. Because the initial momentum of the system is zero, the movement of people and boats is human. The Clippers are fast. People slow their boats and people stop. With the use of divergent thinking, the “one person, one boat” model can be extended to the “two people and one ship” model.