document.write( "Question 1145285: A ball is thrown from a height of 49 meters with an initial downward velocity of 2 m/s. The bald height “h” (in meters) after “t” seconds is given by the following.
\n" ); document.write( "H=49-2t-5t squared
\n" ); document.write( "How long after the ball is thrown does it hit the ground?
\n" ); document.write( "Round to nearest hundredth \n" ); document.write( "

Algebra.Com's Answer #766494 by josmiceli(19441) $\"\"$ $\"About$

You can put this solution on YOUR website!
When ball hits the ground, $\"+h+=+0+\"$
\n" ); document.write( " $\"+-5t%5E2+-+2t+%2B+49+=+0+\"$
\n" ); document.write( " $\"+t+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29+\"$
\n" ); document.write( " $\"+a+=+-5+\"$
\n" ); document.write( " $\"+b+=+-2+\"$
\n" ); document.write( " $\"+c+=+49+\"$
\n" ); document.write( " $\"+t+=+%28-%28-2%29+%2B-+sqrt%28+%28-2%29%5E2-4%2A%28-5%29%2A49+%29%29%2F%282%2A%28-5%29%29+\"$
\n" ); document.write( " $\"+t+=+%28+2+%2B-+sqrt%28+4+%2B+980+%29%29%2F%28-10%29+\"$
\n" ); document.write( " $\"+t+=+%28+2+-+sqrt%28+984+%29%29+%2F+%28-10%29+\"$
\n" ); document.write( " $\"+t+=+%28+2+-+31.369+%29+%2F+%28-10%29+\"$
\n" ); document.write( " $\"+t+=+29.369+%2F+10+\"$
\n" ); document.write( " $\"+t+=+2.937+\"$
\n" ); document.write( "The ball hits the ground in 2.94 sec
\n" ); document.write( "----------------------------------------
\n" ); document.write( "check the math & get a 2nd opinion if needed\r
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "

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