Posted by Adrian on Thursday, January 24, 2013 at 9:41pm.
The height of a rocket is launched from a platform 12 meters above the ground is modeled by the function h(t)=4.9t^2+25t+12 where h(t) represents the height of the rocket in meters and t represents the number of seconds after launching. How many seconds after launching will the rocket return to the ground?

Physics  bobpursley, Thursday, January 24, 2013 at 9:48pm
see other post.
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