document.write( "Question 353196: A rock is tossed into the air at t = 0 seconds from a building 30 feet above the ground. Its height, in feet above the ground, as a function of time is given by . \n" ); document.write( "
Algebra.Com's Answer #252426 by Fombitz(32388)\"\" \"About 
You can put this solution on YOUR website!
By thrown into the air, I'm assuming you gave it a velocity in the opposite direction of gravity.
\n" ); document.write( "I'll call that velocity, \"v%5B0%5D\".
\n" ); document.write( "At time, \"t=0\", the rock is at 30 feet elevation.
\n" ); document.write( "The ground is at 0 feet.
\n" ); document.write( ".
\n" ); document.write( ".
\n" ); document.write( ".
\n" ); document.write( "\"y%28t%29=30%2Bv%5B0%5D%2At-%281%2F2%29gt%5E2\"
\n" ); document.write( "
\n" ); document.write( "
\n" );