“牵连速度”问题是运动的合成与分解中的一类问题.此类问题在高中物理中经常遇到,可以是单纯的求解速度或运动特征的题目,也可以与动能定理、机械能守恒定律、功能关系结合命制一些综合性较强的题目.用绳、杆相牵连的物体,在运动过程中,其两物体的速度通常不同,但物体沿绳或杆方向 The “imposed speed” problem is a type of problem in the synthesis and decomposition of motion. This type of problem is often encountered in high school physics, it can be a simple problem solving speed or motion characteristics, it can also be a kinetic energy theorem, mechanical energy conservation Laws and functional relationships combine life with some more comprehensive problems. Objects that are involved in the rope and pole phase, during the movement, the velocity of the two objects is usually different, but the object is along the rope or rod direction