Answer
-80 m
Work Step by Step
Displacement= Final position- Initial position.
Initial position= $3(0^{2})-2(0^{3})=0$
Final position= $3.0\,m/s^{2}\times(4.0\,s)^{2}- 2.0\,m/s^{3}\times(4.0\,s)^{3}= -80\,m$
Therefore, the displacement= -80 m-0= -80 m
