dondre54
05.05.2020 •
Mathematics
A waterfall has a height of 900 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 in feet after t seconds is given by the equation h equals negative 16 t squared plus 20 t plus 900. How long after the pebble is thrown will it hit the ground?
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