Answer:
It takes the apple 2.738... seconds to hit the ground.
Step-by-step explanation:
The given equation is: [tex]y= -16t^2 +120[/tex]
Here, [tex]y[/tex] represents the fridge height of the apple above the ground after [tex]t[/tex] seconds.
When the apple hit the ground, then it's height will become 0.
So, plugging [tex]y=0[/tex] into the above equation, we will get.......
[tex]0=-16t^2+120\\ \\ 16t^2= 120\\ \\ t^2= \frac{120}{16}=7.5\\ \\ t=\sqrt{7.5}=2.738...[/tex]
Thus, it takes the apple 2.738... seconds to hit the ground.
