Astronauts Are Playing Baseball on the International Space Station

Multiple Choice

Astronauts are playing baseball on the International Space Station.One astronaut with a mass of 60.0 kg,initially at rest,hits a baseball with a bat.The baseball was initially coming toward the astronaut at 30.0 m/s and after the ball is hit,the ball travels in the opposite direction with a speed of 50.0 m/s.The mass of a baseball is 0.120 kg.The recoil velocity of the astronaut is

A) 0.224 m/s.
B) 0.160 m/s.
C) 0.356 m/s.
D) 0.478 m/s.
E) 0.552 m/s.