clockwise or counterclockwise?
The answer to this question depends on the frame of reference that you are using. In a right-handed coordinate system, if you are looking in the direction of the positive x-axis, then a clockwise rotation would be in the negative direction.
Other related questions:
Q: Which way is positive in rotational motion?
A: There is no definitive answer to this question as it depends on the particular situation and frame of reference. In general, however, positive rotational motion is typically defined as motion in the counterclockwise direction when viewed from above.
Q: Can rotational velocity negative?
A: Yes, rotational velocity can be negative. This can happen if the object is rotating in the opposite direction to the original rotation.
Q: Which direction is angular acceleration negative?
A: There is no definitive answer to this question since it can depend on the coordinate system that is being used. In general, however, if the angular acceleration is negative, it means that the angular velocity is decreasing.