Consider an object moving according to the position function below.

r$($t$)=$ a cos$($t$)$i $+$ a sin$($t$)$j

Determine the directions of T and N relative to the position vector r$.$

T$($t$)$ points in the direction $---$Select$---$ is moving opposite $$ is moving $$ is turning opposite $$ is turning $.$ N$($t$)$ points in the direction