Question 629590: A model rocket is shot straight up from the roof of a school. The height at any time t is approximated by the model h=t^2 +3t +28, where h is the height in meters and t is the time in seconds. When does the rocket hit the ground?
Answer by Alan3354(69443)   (Show Source):
You can put this solution on YOUR website! A model rocket is shot straight up from the roof of a school. The height at any time t is approximated by the model h=t^2 +3t +28, where h is the height in meters and t is the time in seconds. When does the rocket hit the ground?
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It doesn't.
h increases with t
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At t=0, h = 28
At t = 5, h = 68
At t = 1000, h = 1,003,028
etc
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Rockets are like that, they have engines that produce thrust and acceleration. They're not projectiles.
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