Two satellites are in circular orbits around a star with equal radius r, speed v, and period T. The satellites are initially diametrically opposite each other. In order to meet the second satellite in time T / 2, the first satellite should decrease its speed to approximately
Answer Choices
A. 0.50 v
B. 0.64 v \leftarrow CORRECT
C. 0.71 v
D. 0.76 v
E. 0.82 v