Question

Heather dropped a water balloon over the side of her school building from a height of 80 feet.The approximate height of the balloon at any point it's fall can be represented by the following quadratic equation: h=16t^2+80. About how long did it take for the balloon to hit the groundA. 1.73B.2.24C.2.45D.2.83

Answer 1

Here, we want to know the time it took the ballon to reach the ground from the given height

Now, the height on the ground is at 0 ft

Thus, at this point, h= 0