[tex]\displaystyle v=5\frac ms\\ \\ h=?m\\ \\ t=?s\\ \\ \\ \\ \\ h=\frac{\Delta v^2}{2\times a}\\ \\ h=\frac{v_1^2-v^2}{2\times a},~v_1=0,~a=g\\ \\ h=\frac{v^2}{2\times g}\\ \\ \\ \\ 0=v-g\times t\\ \\ t=\frac{v}{g}\\ \\ \\ \\ \\ h=\frac{5^2}{2\times 10}=1,25m\\ \\ t=\frac{5}{10}=0,5s [/tex]