document.write( "Question 40920: When a 100-m building is imploded, about how long does it take for a piece that breaks off from the roof to fall to the ground ? \n" ); document.write( "
Algebra.Com's Answer #26359 by fractalier(6550)![]() ![]() You can put this solution on YOUR website! Well, the basic free fall equation (from rest, that is, and neglecting air resistance) is \n" ); document.write( "y = (1/2)gt^2 \n" ); document.write( "Plug in what you know and solve for t... \n" ); document.write( "100 = (1/2)(9.8)t^2 \n" ); document.write( "t^2 = 100 / 4.9 so that \n" ); document.write( "t = 4.52 sec \n" ); document.write( " |