SOLUTION: An object is dropped from an airplane flying 784 feet above the ground. The height 'h' above the ground 't' seconds after it is dropped is given by the formula h=16t+784. How long

Question 91225: An object is dropped from an airplane flying 784 feet above the ground. The height 'h' above the ground 't' seconds after it is dropped is given by the formula h=16t+784. How long will it take for the object to hit the ground?
Answer by Earlsdon(6294) (Show Source): You can put this solution on YOUR website!
When the object hits the ground, the height, h, will be zero. So if you set the formula for h equal to zero and solve for the time, t, this will tell you how long it will take for the object to hit the ground.
h = 16t + 784 ...but I think you may have a typo here! It should be:
So, set this = 0 and solve for t.
Add to both sides.
Divide both sides by 16.
Take the square root of both sides.
or Discard the negative solution as the time, t, should be a positive value.
It will take the object 7 seconds to hit the ground.
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