SOLUTION: A man is standing on a cliff above a beach. He throws a rock upward at a speed of 70 feet per second from a height 100 feet above the beach. How long will it take until the rock la
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Question 1111364: A man is standing on a cliff above a beach. He throws a rock upward at a speed of 70 feet per second from a height 100 feet above the beach. How long will it take until the rock lands on the beach? Use formula h(t)= -16^2+v0t+s to solve Answer by Alan3354(69443) (Show Source):
You can put this solution on YOUR website! A man is standing on a cliff above a beach. He throws a rock upward at a speed of 70 feet per second from a height 100 feet above the beach. How long will it take until the rock lands on the beach?
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h(t) = -16t^2 + 70t + 100
At impact, h(t) = 0
-16t^2 + 70t + 100 = 0
Solve for t, ignore the negative solution.
