[问答题]
Show that the equation for the st arieerm y4n-7a208p fopping distim.iu.) (0mu-nyl x iqance of a car is $d_S\,=\,v_0t_R\,-\,{v_0}^2/(2a)$ , where $ v_0$ is the initial speed of the car, $ t_R $ is the driver’s reaction time, and a is the constant acceleration (and is negative).
