A Rock Falls from a Tower That Is $117.6 \mathrm {~m}$

Multiple Choice

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

A) 10.8 sec
B) 2822.4 sec
C) 10.6 sec
D) 4.9 sec