the horizontal. The horizontal component of the baseball’s initial velocity is 12.0 meters per second. What is the magnitude of the ball’s initial velocity? A. 7.71m/s B. 9.20m/s C. 15.7m/s D. 18.7m/s 18. A toy rocket is launched twice into the air from level ground and returns to level ground. The rocket is rst launched with initial speed ...