【简答题】Points【图片】 and【图片】 are any two arbitrary points in a plane figure. At a instant, the velocities of these two points are 【图片】and 【图片】, respectively; The accelerations of these two points are 【图片】and 【图...
【判断题】Points【图片】 and 【图片】 are any two arbitrary points in a plane figure. The projections of the velocities of these two points on line 【图片】are 【图片】and 【图片】, respectively. The projections of the acceleratio...