We need to find how many seconds it took for the hammer to reach the ground.
Use the given formula:
[tex]t=\frac{\sqrt{h}}{4}[/tex]Now, h represents the height. In this case, the skyscraper has a height of 1276 feet.
Hence, we need to replace h=1276 ft.
Then:
[tex]\begin{gathered} t=\frac{\sqrt{1276ft}}{4} \\ t=17.9 \end{gathered}[/tex]Therefore, it would take 17.9 seconds to reach the ground.
( the value is rounded to the nearest tenth of a second)
