If a rock is thrown vertically upward from the surface of Mars with velocity of $25$ m$/$s$,$ its height $($in meters$)$ after t seconds is h $=25$t $1\mathrm{.}86$t$^2.$ What is the velocity $($in m$/$s$)$ of the rock after $3$ s$?$

What is the velocity $($in m$/$s$)$ of the rock when its height is $10$ m on its way up$?$ On its way down? $($Round your answers to two decimal places.$)$