document.write( "Question 409756: Please help with this problem< i am terrible at math an i just don\"t get it?? I even tried to graph it< i just don\"t know?? Thank You...
\n" ); document.write( "If a ball is thrown straight up into the air with an initial velocity of 60 ft/s, its height in feet after t seconds is given by
\n" ); document.write( "y=60t−16t2\r
\n" ); document.write( "\n" ); document.write( "When is the ball at its maximum height?
\n" ); document.write( "After____ seconds.\r
\n" ); document.write( "\n" ); document.write( "What is the maximum height attained by the ball?
\n" ); document.write( "__________feet \r
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "
Algebra.Com's Answer #288327 by stanbon(75887)\"\" \"About 
You can put this solution on YOUR website!
If a ball is thrown straight up into the air with an initial velocity of 60 ft/s, its height in feet after t seconds is given by
\n" ); document.write( "y=60t−16t2
\n" ); document.write( "When is the ball at its maximum height?
\n" ); document.write( "Max occurs when x = -b/(2a) = -60/(2*-16) = 60/32 = 15/8 seconds
\n" ); document.write( "-----------------------------------
\n" ); document.write( "After 15/8 = 1.875 seconds.
\n" ); document.write( "---------------------------------------------
\n" ); document.write( "What is the maximum height attained by the ball?
\n" ); document.write( "f(1.875) = 60(1.875)-16(1.875)^2 = 56.25 ft.
\n" ); document.write( "=============================
\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
\n" ); document.write( "==============\r
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "
\n" );