Need help quick

Question

In the movie Superman II a boy falls from Niagara Falls and Superman changes into his cape and outfit and flies over to save the boy. How much time did Superman have to do all this before the child would have been impaled on the sharp rocks below if the height of the Falls are 176 feet? 

Use h = -16t² + vt + s where v = 0, and s = 176 and round answer to nearest tenth of a second.

 

Answer 1

t^2 = 176/16

t = .25sqr176 = about slightly less than

3 1/3 seconds