一、动量守恒定律在研制水火箭中的应用例1某校师生共同研究、制作水火箭,火箭外壳尽量使用轻质材料(如雪碧瓶),其内部灌装一定量的水.当给瓶内施加足够压力后,高压气体将水从水火箭尾端的喷嘴高速喷出.由于反冲作用,火箭飞向空中.设水从喷嘴喷出时相对火箭的速度u保持不变,且 First, the application of the law of conservation of momentum in the development of water rockets Example 1 Teachers and students of a school to jointly research and produce water rockets, rocket shell try to use lightweight materials (such as Sprite bottles), the internal filling a certain amount of water. When the bottle When sufficient pressure is applied internally, the high pressure gas ejects water from the nozzle at the end of the water rocket at a high velocity. The rocket flies into the air due to recoil. The water velocity relative to the rocket u remains constant when water is ejected from the nozzle.