Solve the Problem
-If an Object Is Propelled Upward from a Height

Solve the problem
-If an object is propelled upward from a height of 112 feet at an initial velocity of 96 feet per second, then its height after $t$ seconds is given by the equation $h ( t ) = - 16 t ^ { 2 } + 96 t + 112$ . After how many seconds does the object hit the ground?

A) $6.0 \mathrm { sec }$
B) $3.5 \mathrm { sec }$
C) $7 \mathrm { sec }$
D) $11 \mathrm { sec }$