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物体在一条直线上运动发生碰撞时满足动量守恒的条件,解题中如能很好的把握“碰撞特征”,则可快捷顺利的解题.特征1:同向运动,能发生碰撞的条件是:v后v前.特征2:碰撞前后两物体的位置关系不穿越,速度大小保证其顺序合理.特征3:碰撞中系统动能不增加,即Ek≥Ek′.题目:动量分别
When the object moves in a straight line and meets the conditions of conservation of momentum, the problem of conservation of momentum can be met. If the “collision characteristics” can be well grasped in the problem solving, the problem can be solved quickly and smoothly. Feature 1: The same direction of motion, the conditions for collision can be :v after v. Feature 2: The positional relationship between the two objects before and after the collision does not cross, and the speed ensures the order is reasonable. Feature 3: The kinetic energy of the system does not increase during the collision, ie Ek≥Ek′. Title: Momentum Respectively