Polynomial functions?

label Mathematics
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A projectile is fired upward from the ground with an initial velocity of 300 feet per second. Neglecting air resistance, the height of the projectile at any time t can be described by the polynomial function P(t) = ­16t^2 + 300t

 How long will it be until the object hits the ground? 

Aug 5th, 2015

Thank you for the opportunity to help you with your question!

when the projectile hits the ground p(t) =0, solve for positive solution 

t(-16t+300) =0 

t= 300/16 = 75/4 = 18.75 s  


Please let me know if you need any clarification. I'm always happy to answer your questions.
Aug 5th, 2015

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