Solve the Problem
-A Ball Is Thrown Downward from a Window

Multiple Choice

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 140 feet?

A) $1.9 \mathrm { sec }$
B) $4.4 \mathrm { sec }$
C) $2.1 \mathrm { sec }$
D) $3.0 \mathrm { sec }$