1. The problem statement, all variables and given/known data how long does it take a football, with an initial velocity of 30 m/s at 30 degrees up from the horizontal, to reach the top of its flight? 2. Relevant equations Δy= ½ (Vf + Vo) t 3. The attempt at a solution I know that Vf= 0 m/s here because when it reaches the highest point, it stops for a split second. I also know that the horizontal component is 30sin(30), which equals 15. I then plugged it into the equation above to get 15= ½ (0+30)t → 15= 15t → t= 1 second. Is this process correct?