Solve the Problem $$h = 117.6 - 4.9 t ^ { 2 }$$

Multiple Choice

Solve the problem.
-A rock falls from a tower that is 117.6 m high. As it is falling, its height is given by the formula $$h = 117.6 - 4.9 t ^ { 2 }$$ How many seconds will it take for the rock to hit the ground (h=0) ?

A) 4.9 s
B) 10.6 s
C) 10.8 s
D) 2,800 s