SOLUTION: 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 heig

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Question 1031385: 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.)

Answer by ikleyn(52798) About Me  (Show Source):
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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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Substitute  v0 = 50  and  s = 90  into the function h(t)  and solve an equation for t

-16%2At%5E2+%2B+50%2At+%2B+90 = 0.

Use the quadratic formula.