Recently in an MLB game a fan was struck by a foul ball. This person was severely injured from the baseball. My initial question was why didn't this person just move out of the way. Well, easier said than done. An official league baseball has a mass of .145 kg, and the average velocity of a major league fastball is 40.3 m/s. this means that when the ball hits the bat, if the batter perfectly squares up the baseball, the ball can leave the bat at approximately 49 m/s which is equivalent to 110 mph. The individual that was hit by the ball was on the third base side, first row. This means that there was a distance of 50 meters between the batter and the person hit. The time it took for the ball to reach the fan was 0.92 seconds. Would you be able to react that fast?