If an Object Is Thrown Vertically Upward with an Initial $H ( t ) = - 16 t ^ { 2 } + 128 t$

Short Answer

If an object is thrown vertically upward with an initial speed of 128 ft/sec, its height (in feet) t seconds later is given by $H ( t ) = - 16 t ^ { 2 } + 128 t$ . Graph the function H(t) and use the graph to determine when the object will hit the ground.