A Tesla is travelling in a curved path in the counter clockw

A Tesla is travelling in a curved path in the counter clockwise direction. While setting up the free body diagram, you are deciding whether to use a Normal/Tangential or polar coordinate system. Which answer contains the correct unit vectors for both polar and normal tangential coordinates? u_n = F, u_t = H, u_theta = D, u_r = E u_n = B, u_t = G, u_theta = D, u_r = B u_n = B, u_t = G, u_theta = H, u_r = G u_n = F, u_t = H, u_theta = A, u_r = C none of the above.

Solution

answer is option (c)

tangential component along the curve is G and also ur=G,utheta=H