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Just need the answer A, B , C or D

Just need the answer A, B , C or D-example-1

1 Answer

5 votes

Answer:

A. 2.25 feet.

Step-by-step explanation:

We know the following equation:


v=\sqrt[]{2gh}

Where v is the speed, g is the gravity and h is the height. So, replacing v by 12 feet per second and g by 32 feet per second square, we get:


12=\sqrt[]{2(32)h}

So, solving for h, we get:


\begin{gathered} 12=\sqrt[]{64h} \\ 12^2=(\sqrt[]{64h})^2 \\ 144=64h \\ (144)/(64)=(64h)/(64) \\ 2.25=h \end{gathered}

Therefore, the answer is A. 2.25 feet.

User Pierre Salagnac
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