SOLUTION: h = �16t2 + 40t + 8. The height h in feet of an object after t seconds is given by the function h = �16t2 + 40t + 8. How long will it take the object to hit the ground? R

Question 683924: h = �16t2 + 40t + 8.
The height h in feet of an object after t seconds is given by the function
h = �16t2 + 40t + 8.
How long will it take the object to hit the ground? Round your answer to the nearest thousandth.

Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
It reaches the ground when

Use the quadratic formula:

sec
Here's a plot of the function:

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