摘要
动量守恒定律应用广泛 ,在一维情况下 ,其标量式为∑miVi=常量 ,其中Vi 为即时速度 .若用碰撞前后各物体的平均速度 Vi代替Vi,可以证明∑mi Vi=常量仍成立 ,并且在某些情况下 。
The law of conservation of momentum is widely applied, under the circumstance of one dimension, the formula should be Σm iV i=constant, among which V i means velocity. If i, the average velocity of objects before or after collision, is to replace V i, Σm i i=constant can be proved to be true. Under certain circumstances, it would be used more conveniently than its original form.
关键词
动量
即时速度
平均速度
动量守恒定律
momentum
conservation
immediate velocity
average velocity
