Question 367386: An Archer shoots an arrow. It's heights (in inches) at three times (in seconds) are given:
Time is t
Distance above ground is s
at 3 seconds, the arrow was 326 ft above the ground
at 5 seconds, the arrow was 350 ft above the ground
at 8 seconds, the arrow was 146 ft above the ground
What is the maximum height of the arrow?
So far, all I have is s=-16t^2+140t+50, but I have no idea how to get the height of the arrow from there. Answer by scott8148(6628) (Show Source):