Wendy enjoys building small rockets. She makes a two-stage rocket that masses 2.7 kg. When the rocket is moving up at 3.2 m/s, the top third of the rocket separates from the rest and continues in the same direction the rocket has been flying. Immediately after separating, the bottom 2/3 of the rocket is moving up at 0.15 m/s. What is the speed of the top third of the rocket immediately after separation?
Assume the total mass of the rocket is constant and is distributed evenly.
A.
9.3 m/s
B.
9.9 m/s
C.
3.1 m/s
D.
9.6 m/s