1-1 Frame of Reference Particle(质点) 1. Frame of Reference(参照系) When we discuss the position and the velocity(速度)ofan object ,we must answer the o questions:

第一章质点运动学(Kinematics) 1-1参考系 Frame质点 of reference particle 1-2位置矢量位移 Position vector and displacement 1-3速度加速度 Velocity and acceleration 1-4两类运动学问题 Two types of Problems 1-5圆周运动及其描述 Circular motion 1-6运动描述的相对性 Relative motion