Algebra.Com's Answer #13085 by Earlsdon(6294)![\"\"](\"/images/stars/stars-13.gif\")  
You can put this solution on YOUR website!
Hmmm...I think I have answered this one previously. Anyway, here it is again.
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document.write( "The equation is correct:
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document.write( " This is the function describing the problem. In words, the height (s) is a quadratic function of time (t) with initial velocity of 64 ft/sec and an initial height of zero.\r
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document.write( "After 1 second (t=1), the height of the baseball will be:
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document.write( " The height will be 48 feet after 1 second.\r
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document.write( "Find when the baseball will hit the ground (s=0) by setting the function s(t) = 0 and solving for t.
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document.write( " Factor out a t.
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document.write( " Divide both sides by t.
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document.write( " Subtract 64 from both sides.
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document.write( " Divide both sides by -16
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document.write( " The baseball will return to ground in 4 seconds.\r
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document.write( "The maximum height and time is found by finding the location of the vertex of this parabola.
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document.write( "Since the parabola opens downward, the vertex will be at the maximum point of the vertex and will represent the maximum height attained by the baseball.
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document.write( "The x-coordinate (or, in this problem, the t-coordinate) is given by:
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document.write( "The a and b come from the standard form of the quadratic equation: 
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document.write( "In this case, a = -16, b = 64, and c = 0\r
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document.write( " The maximum height of the baseball will be attained in 2 seconds.\r
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document.write( "To find this maximum eight, substitute t=2 into the original function and solve for s.
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document.write( " The maximum height attained by the baseball is 64 feet. \n" );
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