Answer:
2 seconds
Step-by-step explanation:
The height of the object is modeled by the expression -16 + 8t.
It means we have
[tex]h=-16+8t[/tex]
Now, when the object hits the ground, the height must be zero.
Hence, substitute h = 0 in the above equation
[tex]0=-16+8t\\\\8t=16\\\\t=2[/tex]
Therefore, it will take 2 seconds to hit the ground.
