.
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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Substitute v0 = 50 and s = 90 into the function h(t) and solve an equation for t
= .
Use the quadratic formula.