Chapter 5 - Dynamics of Uniform Circular Motion - Check Your Understanding - Page 124: 1

(a) In position 1, the direction of velocity is south and the direction of acceleration is west. (b) In position 2, the direction of velocity is west and the direction of acceleration is north.

Velocity at a point points in the direction tangent to the motion circle at that point, while the direction of acceleration always points toward the center of the motion circle. (a) In position 1, the direction of velocity is south and the direction of acceleration is west. (b) In position 2, the direction of velocity is west and the direction of acceleration is north.