在运动学中位移、速度和加速度这三个量是最重要的物理量,我们在教和学的过程中要把在三个量看作一个整体,他们在描述物体的运动情况时,相互依存又相互制约着,而这三个量的巧妙的组合又构成了灵活多变的运动学问题.在有关这三个量的问题中,对某一个 In kinematics, the three quantities of displacement, velocity and acceleration are the most important physical quantities. We regard the three quantities as a whole in teaching and learning. When they describe the movement of objects, they are interdependent Mutual restraint, and the ingenious combination of these three quantities constitutes a flexible and kinematic problems in the three questions on the amount of a