有关接触物系接触点的速度特征,在中学物理中常有涉及,也归纳了相应的解决办法.由接触物的力学性质及“接触”的约束条件可知,沿接触面法线方向,接触双方必须具有相同的法向分速度,否则将分离或形变违反接触的约束条件.根据接触物系接触点的相关速度特征,很多教 The velocity characteristics of the contact points of the contact system are often involved in the physics of secondary schools, and the corresponding solutions are also summarized. It can be seen from the mechanical properties of the contact objects and the constraints of the “contact” that, in the normal direction of the contact surface, Both must have the same normal velocity, otherwise the separation or deformation will violate the constraint of contact. According to the contact velocity characteristics of the contact point, a lot of teaching