Two manned satellites approaching one another, at a relative speed of 0.300 m/s, intending to dock. The first has a mass of 5.50 × 10³ kg, and the second a mass of 7.50 × 10³ kg.

(a) Calculate the final velocity (after docking) in m/s by using the frame of reference in which the first satellite was originally at rest. (Assume the second satellite moves in the positive direction. Include the sign of the value in your answer.)

a. -0.120 m/s
b. -0.160 m/s
c. -0.200 m/s
d. -0.240 m/s