[单选题]
16.26: A 10.0 kg mass mov-/g/ jb*ipn:itwmw.r 8w oox(es to a 56 .hw8jy.lend-snf the right at 8.00 m/s. A 5.0 kg mass moves to the left at 7.00 m/s. With what speed does tadnsje l.fn-56 y.8whhe center of mass of this two-mass system move?
A. 7.67 m/s
B. 7.50 m/s
C. 3.00 m/s
D. 2.00 m/s
E. 0.50 m/s
