document.write( "Question 833706: Hi,
\n" ); document.write( "So I didn't really understand how to do this problem and I was wondering if you could do it step by step so I could fully understand. Thanks so much for your time and effort.
\n" ); document.write( "Question :
\n" ); document.write( "The equation for the motion of a projectile fired straight up at an initial velocity of 64ft/s is h=64t-16t^2, where h s the height in feet and t is the time in seconds. Fine the time the projectile needs to reach its highest point. How high will it go ? \r
\n" ); document.write( "\n" ); document.write( "Again thanks so much! c:
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Algebra.Com's Answer #502707 by Alan3354(69443)\"\" \"About 
You can put this solution on YOUR website!
The equation for the motion of a projectile fired straight up at an initial velocity of 64ft/s is h=64t-16t^2, where h s the height in feet and t is the time in seconds. Fine the time the projectile needs to reach its highest point. How high will it go ?
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\n" ); document.write( "h(t) = 64t-16t^2 is a parabola.
\n" ); document.write( "Max h is the vertex
\n" ); document.write( "t @ vertex = -b/2a = -64/-32 = 2 seconds
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\n" ); document.write( "Max h is h(2)
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