document.write( "Question 1151731: an astronaut on the surface of the moon jumps off a 41.6 ft tall cliff. the equation that gives the astronaut height about lunar surface is h=2.6t^2+41.6 when does the astronaut hit the lunar surface? \n" ); document.write( "

Algebra.Com's Answer #773553 by josmiceli(19441) $\"\"$ $\"About$

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$\"+h+=+-2.6t%5E2+%2B+41.6+\"$ ft
\n" ); document.write( "Note that the 1st term should be negative since
\n" ); document.write( "this is gravity acting downward
\n" ); document.write( "When the astronaut hits the surface, $\"+h+=+0+\"$
\n" ); document.write( " $\"+-2.6t%5E2+%2B+41.6+=+0+\"$
\n" ); document.write( " $\"+-2.6t%5E2+=+-41.6+\"$
\n" ); document.write( " $\"+t%5E2+=+16+\"$
\n" ); document.write( " $\"+t+=+4+\"$
\n" ); document.write( "Astronaut hits the surface in 4 sec\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "

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