v相对=0指两个运动物体的相对速度为零, 即处于相对静止状态,这往往是运动问题的临界状态. 1.当v相对=0时,运动物体上升到最高点最高点是与参照物有关的一个特殊位置.设物体甲的运动以物体乙为参照物,则当物体甲相对于物体乙的竖直向上的分速度为零时,甲相对于乙到达最高点. v relative = 0 refers to the relative velocity of two moving objects is zero, that is in a relatively stationary state, which is often the critical state of the motion problem. 1. When v is relatively 0, the highest point of the moving object to the highest point is with the reference A particular position related to the object. Let the object A move with the object B. When the vertical velocity of the object A relative to the object B is zero, A reaches the highest point relative to B.