$2.$ If a particle is at the origin when t $=0,$ determine its magnitude of acceleration when t $=5$ s$.$

Express your answer using three significant figures and include the appropriate units.

$2.$ If a particle is at the origin when t$=0,$ determine its direction of acceleration when t $=5$ s as the angle which the acceleration makes with the x axis measured counterclockwise from the positive x axis.

Express your answer using three significant figures.