Question

A all falls off a cliff at a height of 256 feet if the equation for high as a fraction of time is h(t) =-16t2 + initial hey where T is time in seconds and h(t) is high in feet, how many seconds will it take for the pedal to hit the ground?

Answer 1

Answer:

t=4

Step-by-step explanation:

$h(t)=-16t^2+256\\\text{The pedal will hit the ground when h(t)=0.}\\h(t)=0,\ -16t^2+256=0\\16t^2=256, \ t^2=16, \ t=4 \ or -4.$

As t represents time, t=-4 can't be a solution.