document.write( "Question 962512: Bob hits a cricket ball into air. The height (in feet) of the ball at time tseconds is given by h(t)=-10.5t^2+66.3t + 6. Find the maximum height the ball reaches and the time in seconds when that maximum height occurs \n" ); document.write( "

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Bob hits a cricket ball into air. The height (in feet) of the ball at time tseconds is given by h(t)=-10.5t^2+66.3t + 6. Find the maximum height the ball reaches and the time in seconds when that maximum height occurs
\n" ); document.write( "***
\n" ); document.write( "h(t)=-10.5t^2+66.3t + 6
\n" ); document.write( "complete the square:
\n" ); document.write( "h(t)=-10.5(t^2-(66.3/10.5)t+(66.3/21)^2)+104.66 + 6
\n" ); document.write( "h(t)=-10.5(t-(66.3/21)^2+110.66
\n" ); document.write( "The ball reaches the maximum height of 110.7 ft at 3.15 sec \n" ); document.write( "

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