Direction of instantaneous velocity question

Question

The diagram shows a rock on the end of a string being whirled around in a circle in the horizontal plane. The motion is viewed from above and the stone is rotating clockwise. What are the dimensions associated with its instantaneous velocity and instantaneous acceleration, respectively:



Link to diagram: https://docs.google.com/document/d/1bKw9Nw0Fhd5-G1wzIGn5Rxw7LXU2wh23UKTYroThOZw/edit?usp=sharing

a) south, east

b) east, west

c) south, south

d) west, west

e) south, west

Answer 1

I will not tell the the actual option, but the general rule:

The direction of instantaneous velocity is always tangential to the trajectory, as indicated by the arrow.

The direction of instantaneous acceleration is always towards the center.