<PRE><B>Question 268960</B>
I throw a ball inot the air in a movie theater. I throw it up with an initial velocity of 64 feet/scecond froam a balcony 10 feet high.  The ceiling of the theater is 58 feet high. When will the ball hit the ceiling/
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h(t) = -16t^2 + 64t + 10 (t in seconds, h in feet
58 = -16t^2 + 64t + 10
-16t^2 + 64t - 48 = 0
*[invoke solve_quadratic_equation -16,64,-48]
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At t = 1 second.  The graph shows the height of the ball if there is nothing in its way.

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