$($II$)$ Fig. $9\mathrm{.}3$ describes the motion of the rocket in the first $12$ minutes.

$\backslash$table$[[$time$/$minutes$,$motion of the rocket$],[0$ to $4,$uniform acceleration$],[4$ to $6,$increasing acceleration$],[6$ to $10,$decreasing acceleration$],[10$ to $12,$constantspeed$]]$