document.write( "Question 451147: A ball is thrown vertically upward. After t seconds, its height h (in feet) is given by the function . What is the maximum height that the ball will reach?\r
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Algebra.Com's Answer #310247 by ewatrrr(24785) $\"\"$ $\"About$

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document.write( "Hi,
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document.write( "h(t)=60t-16t^2 |What is the maximum height that the ball will reach?
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document.write( "Using the vertex form of a parabola,  where(h,k) is the vertex
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document.write( "h(t)= -16t^2 + 60t   |completing the Square
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document.write( "h(t)= -16[(t-15/8)^2 - 225/64]
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document.write( "h(t)= -16(t-15/8)^2 + 225/4    |parabola opening downward: V(1.875,56.25)
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document.write( "maximum height that the ball will reach is 225/4 = 56.25 ft \n" );
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