document.write( "Question 77325: a rock falls from a tower that is 176ft high. As it is falling its height is given by the formula h=176-16t^2. how many seconds will it take for the rock to hit the ground(h=0) \n" ); document.write( "
Algebra.Com's Answer #55441 by rajagopalan(174)![]() ![]() You can put this solution on YOUR website! guiding formula h=176-16t^2 \n" ); document.write( "rewriting \n" ); document.write( "176-16t^2=h \n" ); document.write( "176-16t^2=0 (ground level) \n" ); document.write( "16t^2=176-0 \n" ); document.write( "t^2=176/16 \n" ); document.write( "t^2=11 \n" ); document.write( "So t=sq root of 11 = approx 3.3 seconds \n" ); document.write( "okay \n" ); document.write( "good day\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |