Đáp án:
Giải thích các bước giải:
\(\eqalign{
& \left\{ \matrix{
v = {v_0} + at\,\,\,\,\left( 1 \right) \hfill \cr
s = {v_0}t + {1 \over 2}a{t^2}\,\,\,\left( 2 \right) \hfill \cr} \right. \cr
& \left( 1 \right) \Rightarrow t = {{v - {v_0}} \over a} \Rightarrow s = {v_0}.{{v - {v_0}} \over a} + {1 \over 2}a.{\left( {{{v - {v_0}} \over a}} \right)^2}\, \cr
& \Leftrightarrow s = {{2{v_0}.v - 2v_0^2} \over {2a}} + {{{v^2} - 2{v_0}.v + v_0^2} \over {2a}} \cr
& \Rightarrow {v^2} - v_0^2 = 2as \cr} \)
