Question A commonly used quadratic model for falling objects near Earth's surface is:
Distance fallen (in feet) at time t (in seconds): d(t) = 16t2
The rooftop of a 15-story building is 150 feet above the ground. How long does it
take a water balloon dropped from the rooftop to hit the ground?
The water balloon hits the ground in
seconds. If necessary, round your
answer to the nearest tenth.