Solve the Problem $t$ In Seconds Is $s ( t ) = 16 t ^ { 2 } + 32 t$

Solve the problem.
-A ball is thrown downward from a window in a tall building. Its position at time $t$ in seconds is $s ( t ) = 16 t ^ { 2 } + 32 t$ , where $s ( t )$ is in feet. How long (to the nearest tenth) will it take the ball to fall 77 feet?

A) $1.2 \mathrm { sec }$
B) $2.0 \mathrm { sec }$
C) $2.2 \mathrm { sec }$
D) $1.4 \mathrm { sec }$