Question 1031385
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Use the function  h(t)=−16t2+v0t+s to answer the question.

A man is standing on a cliff above a beach. He throws a rock upward at a speed of 50 feet per second 
from a height 90 feet above the beach. How long will it take until the rock lands on the​ beach?

The rock will land on the beach in? (Round to the nearest 10th as needed.)
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<pre>
Substitute  v0 = 50  and  s = 90  into the function h(t)  and solve an equation for t

{{{-16*t^2 + 50*t + 90}}} = {{{0}}}.

Use the quadratic formula.
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