Question 949111
The point when it will hit the ground is when h=0
-16t^2+1444=0
*[invoke quadratic "t", -16, 0, 1444 ] 
The answer is 9.5 seconds
CHECK
0=-16t^2+1444
0=-16(9.5)^2 + 1444
0=-16(90.25)+1444
0==1444+1444
0=0