The velocity of a ball as it is thrown up is 20 meters/second. It attains zero velocity after 3. 5 seconds. What is the average acceleration of the ball during its upward flight?.

Football was the fourth deadliest sport with a fatality rate of .81 per 100,000 participants. cheerleading, which has been shown to be the most dangerous activity based on injury data, was not included in the study because it was not classified as a sport.this is my answer because it didn’t give me any sports