An Object Is Thrown Upward from a Height of 480 $h = - 16 t ^ { 2 } + 16 t + 480$

Multiple Choice

An object is thrown upward from a height of 480 feet with an initial velocity of 16 feet per second. The height h (in feet) of the object after t seconds is modeled in the equation $h = - 16 t ^ { 2 } + 16 t + 480$ . How long will it take for the object to reach the ground?

A) 5 seconds
B) 6 seconds
C) 1 second
D) 3 seconds
E) 2 seconds