The Wollomombi Falls in Australia have a height of 1100
Chapter 8, Problem 63(choose chapter or problem)
The Wollomombi Falls in Australia have a height of 1100 feet. A pebble is thrown upward from the top of the falls with an initial velocity of 20 feet per second. The height of the pebble h after t seconds is given by the equation h = -16t 2 + 20t + 1100. Use this equation for Exercises 63 and 64.How long after the pebble is thrown will it hit the ground?Round to the nearest tenth of a second.
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