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cluponka [151]
2 years ago
12

A competitive cliff diver jumps into

Mathematics
1 answer:
fredd [130]2 years ago
8 0

Answer:

2.25 seconds

Step-by-step explanation

d=16t^{2}

d=81 feet\\t=?

Because you know what distance equals you can plug it into the equation

81=16t^{2}

From there you can solve by dividing the 16 over and then square rooting.

\frac{81}{16}=t^{2}

5.0625=t^{2}

You take the square-root to get rid of t^{2}

\sqrt{5.0625} =\sqrt{t}^{2}

t=2.25

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