I have several pictures similar to the one provided in that attached word doc. The question is:
The picture shows the velocity and acceleration vectors for a particle at different times. (The particle is moving in the plane of the paper.) Tell whether aT (a subscript T) is negative, zero, or positive. Also, tell whether aN (a subscript N) is zero or positive. If aN is positive tell whether the velocity vector is rotating clockwise or counterclockwise.
I am not sure how to picture this to determine whats going on in this picture. Or If I should arrange these vectors to see them differently. Any help would be greatly appreciated. Thanks