SOLUTION: a hammer is dropped from a construction project 576 ft above the ground. the height h(in ft) of the hammer is mideled by the position equation h(t)=-16t^2+ 576 where t is the time

Question 76827: a hammer is dropped from a construction project 576 ft above the ground. the height h(in ft) of the hammer is mideled by the position equation h(t)=-16t^2+ 576 where t is the time i seconds. how long will take for the hammer to reach the ground?
Answer by Edwin McCravy(20060) (Show Source): You can put this solution on YOUR website!


a hammer is dropped from a construction 
project 576 ft above the ground. the height 
h(in ft) of the hammer is mideled by the 
position equation  where t 
is the time in seconds. how long will take 
for the hammer to reach the ground?

Plug in  
That's because when it hits the ground its 
height above the ground is 0.



   

 

Divide both sides by 16:

    

Take positive square roots of both sides:

     

Answer: the hammer hits the ground in 6 seconds.

Edwin

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