Question 772360
h(t)=-16t^(2)+1936.
When glasses hit ground h(t) = 0
0= -16t^(2)+1936.
- 16t^2 = -1936
16t^2 = 1936
t^2 = 1936/16
t^2 = 121
t = 11
His glasses will take 11 seconds to hit the ground.
Hope this helps.
:-)