Question

mr. hortons physics class went to the football field to launch a rocket into the air. the rockets height in feet, ( f(x) ), depends on the number of seconds, ( x ), that have elapsed since launch. what does ( f(8)=0 ) tell you? the rocket starts its launch 8 feet above the ground. after 8 seconds, the rocket has already landed on the field.

Explanation:

In the function \( f(x) \), \( x \) represents the number of seconds since launch and \( f(x) \) represents the rocket's height. When \( f(8)=0 \), the input \( x = 8 \) (8 seconds) and the output \( f(x)=0 \) (height is 0 feet). A height of 0 feet means the rocket is on the ground.

Answer:

After 8 seconds, the rocket has already landed on the field.