$($c$)$ What is the unit$-$vector expression for the displacement of the hurricane during the first $4\mathrm{.}00$ h$?(3)$ The displacement of the hurricane during the first time interval is described by the particle under constant velocity model as r$1=$ v$1$t$1.$ Substitute numerical values to find the displacement of the hurricane during the first $4\mathrm{.}00$ h$.$r$1=$ x$1+$ y$1=($v$1$x$+$ v$1$y$)$t$1=$ km$/$h$+$ km$/$h h $=$ km$+$ km