The Falling Rock
A rock falls from a bridge into the water below. The function H(t)=−16t2+256\displaystyle {H}{\left({t}\right)}=-{16}{t}^{{2}}+{256} gives the height (measured in feet) of the rock above the water after t\displaystyle {t} seconds. Use this information to complete the table below.

t\displaystyle {t}00.252.253.53.754
H(t)\displaystyle {H}{\left({t}\right)}

Use the table to answer the questions below.
Your answers must include units of measure. Do not abbreviate the units.

1. How high was the bridge?

2. How long does it take for the rock to hit the water?

3. Determine the practical domain in this situation.
    ≤t≤\displaystyle \le{t}\le
4. Determine the practical range in this situation.
    ≤H(t)≤\displaystyle \le{H}{\left({t}\right)}\le

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