速查 $$V_t=V_0+at$$ $$x=V_0t+\frac{1}{2} at^2$$ $$\overline{v} =\frac{V_0+V_t}{2} =V_{\frac{t}{2} }$$ $$x=\frac{(V_0+V_t)t}{2} $$ $$V_t^2-V_0^2=2ax$$ $$V_\frac{x}{2} =\sqrt{\fra…