The Time T , in Seconds, for a Free Falling $t = \sqrt { \frac { d } { 16 } }$

Multiple Choice

The time t , in seconds, for a free falling object to fall d feet is given by $t = \sqrt { \frac { d } { 16 } }$ . If a construction worker drops a nail from a building and observes it strike a water puddle after 5 seconds, what is the height from which the nail was dropped?

A) 80 feet
B) 25 feet
C) $100$ feet
D) $400$ feet
E) 5 feet