A waterfall has a height of 700 feet. A pebble is thrown

Last updated: 7/28/2022

A waterfall has a height of 700 feet. A pebble is thrown upward from the top of the falls with an initial velocity of 16 feet per second. The height of the pebble h in feet after t seconds is given by the equation h= - 16t² + 16t+ 700. How long after the pebble is thrown will it hit the ground? The time it takes for the pebble to hit the ground is about