[问答题]
Show that the equation for3)rn . j/dyso2xo9wgw/g5x j a thhpb59 k.wev*kg8k ue* e stopping distance 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).