document.write( "Question 1096358: Suppose the height h of an object thrown straight upward from the ground is given by h = 44.1t - 4.9t^2, where h is in meters and t is the elapsed time in seconds. After how many seconds does the object strike the ground? \n" ); document.write( "

Algebra.Com's Answer #710810 by josmiceli(19441) $\"\"$ $\"About$

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When the object hits the ground,
\n" ); document.write( " $\"+h+=+0+\"$
\n" ); document.write( " $\"+44.1t+-+4.9t%5E2+=+0+\"$
\n" ); document.write( " $\"+t%2A%28+44.1+-+4.9t+%29+=+0+\"$
\n" ); document.write( "Note that $\"+t=0+\"$ gives you $\"+h=0+\"$
\n" ); document.write( "at the instant object is released
\n" ); document.write( "Use the other solution:
\n" ); document.write( " $\"+44.1+-+4.9t+=+0+\"$
\n" ); document.write( " $\"+4.9t+=+44.1+\"$
\n" ); document.write( " $\"+t+=+9+\"$
\n" ); document.write( "In 9 sec the object hits the ground
\n" ); document.write( " \n" ); document.write( "

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