Question

question 4 you drop a rock off a bridge. The rock height,h (in feet above the water) after t seconds is modeled by h = -16 t + 541 What is the height of after2 seconds

Answer 1

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so the answer to this is 

h = -16*2 + 541 =509
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Answer 2

∵h = -16t + 541
   So, after 2 seconds ⇒⇒⇒ t =2
    substituting in the equation of h
∴ h = -16*2 + 541 = 509 feet