MATH
posted by KE KE .
The function s(t) = 16t^2 models the distance, s(t), in feet, that an object falls in t seconds. Find the number of seconds a sky diver is in free fall after jumping from a plane if she falls 192 feet before opening a parachute. Express your answer in simplified radical form.

16t^2=192
16t^2/16=192/16
t^2=12
square roote of t^2 = the square root of 12