Answer Happy

I only need help with the question that starts with "In stop tothink 4.5" thanks
A particle moves cw around a circle at constant speed for 2.0 s. It then reverses direction and moves cow at half the original speed until it has traveled through the same angle. Which is the particle's angle-versus-time graph? In Stop to Think 4.5 (p.96), look at the graph shown for choice b. Which way is the particle moving around the circle during 0-2 s and then 2- 6 seconds? O clockwise then counter-clockwise counter-clockwise the entire time. counter-clockwise then clockwise clockwise the entire time