An astronaut floating alone in outer space throws a baseball. If the ball moves away at 20 m/s, the astronaut will
A. move in the opposite direction at 20 m/s.
B. move in the opposite direction at a lower speed.
C. move in the opposite direction at a higher speed.
D. none of the above
Answer:B
An astronaut floating alone in outer space throws a baseball. If the ball moves away at 20 m/s, the astronaut will
A. move in the opposite direction at 20 m/s. B. move in the opposite direction at a lower speed. C. move in the opposite direction at a higher speed. D. none of the above