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quadratic function
a model rocket is shot up in the air and its path is approximated by h=-5t^2+30 where h is the height of the rocket above the ground in meters and t is the elapsed time in seconds, when will the rocket hit the ground?
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The rocket will it the ground when it's height is h=0
Set the quadratic equal to 0 and solve. You will get two solutions. One negative and one positive. Of course, we can not have negative time. This one is easier because we lack a t term. No quadratic formula or factoring needed. |
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