Question

1. Jason kicked a ball into the air. The function

Answer 1

Answer:

5 seconds

Step-by-step explanation:

The height is modeled by the function $h(t)=80t-16t^2$ :

#Factor out t:

$h(t)=80t-16t^2\\\\\#Equate \ to \ zero\\0=80t-16t^2\\\\t(80-16t)=0\\\\t=0\\\\80-16t=0\\\\80=16t\\\\t=5$

Hence, the ball is thrown from the ground, goes up and comes back down and hits the ground 5 seconds later, t = 5