“验证动量守恒定律”是个非常重要的学生实验,自从恢复高考到现在,有关该实验的考察就频频出现,并成为各地调研试题的“常客”,现采撷两道有关该实验的创新试题,供大家欣例赏.1某同学用如图1所示装置通过半径相同的A、B两球的碰撞来验证动量守恒定律.实验时先使A球从斜槽上其 “Verification of the law of conservation of momentum” is a very important student experiment. Since the resumption of the college entrance examination, the examination of the experiment has frequently appeared, and has become a “frequent visitor” of survey questions around the country. Two innovative questions about this experiment are now available. Everyone likes to enjoy. 1 Some students use the device shown in Figure 1 to verify the momentum conservation law through the collision of two balls A and B with the same radius. During the experiment, first make the A ball from the chute.