Factor the equation:
Equal to 0 as the height y is 0 in the moment the baseball is hit and in the moment the ball falls again:
Fins the solutions for t:
Then, you have how long the baseball is in the air: 4s
As the total time is 4: the time when the ball is in the maximun height is the half of this time (because the ball ups in the same time that falls.
Time of maximum hight: 2s
You use this time to find the maximum height:
The maximum height is 64ftCorrect answer c.