Two forces F$1=(-7$i$+5$j$)$ N and F$2=(3$i$-8$j$)$ N act on a particle of mass $4$ kg that is initially at rest at the coordinates $(-2$m$,3$m$).$ Find

$($a$)$ The magnitude and direction of the acceleration experienced by the particle

$($b$)$ The velocity of the particle at t$=1\mathrm{.}5$ sec

$($c$)$ The displacement of the particle at t$=1\mathrm{.}0$ sec