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 90 feet per second from a heigh

Question 1031386: 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 90 feet per second from a height 120 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 tenth as needed.)
Answer by ikleyn(52795) (Show Source): You can put this solution on YOUR website!
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Use the function h(t)=−16t2+v0*t+s to answer the question.
A man is standing on a cliff above a beach. He throws a rock upward at a speed of 90 feet per second from a height 120 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 tenth as needed.)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Substitute  v0 = 90  and  s = 120  into the function h(t)  and solve an equation 

 = .

Use the quadratic formula.

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SOLUTION: Use the function h(t)=&#8722;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 90 feet per second from a heigh

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 90 feet per second from a heigh