A constant upward $($in the z direction$)$ force vec$($F$)$ of $40$ Newtons acts on an object

with a mass of $5$ kilograms. The object has an initial velocity vec$($v$\_(0))=$vec$($i$)-$vec$($j$)+$vec$($k$).$

Find the position function at time t assuming the objects initial position was $(1,1,1).$