asap help please!!

Question



Answer 1

256t= -16t^2-256t

256t= (-16t+256)t

We scratch the t's from both sides of the equation and open the frame

256=-16t+256

256-256= -16t

0=-16t

0/-16= t

t=0

Answer 2

The apple will hit the ground when its height is equal to 0, so try setting h(t) = 0 and solving for t.

For example, if h(t) was -16t² + 64t + 80, then

-16t² + 64t + 80 = 0

16t² - 64t - 80 = 0

t² - 4t - 5 = 0

(t-5)((t+1) = 0

t = 5 or t = -1

The negative time does not make sense, so the apple would hit the ground after 5 seconds.