document.write( "Question 153687: Please help me solve the following word problem (note: this problem came straight from a worksheet):\r
\n" );
document.write( "\n" );
document.write( "An object is dropped from an initial height of s feet. The object's height at any time t, in seconds, is given by h= -16t^2 + s. How long does it take for an object dropped from 300 feet to hit the ground? Round your result to two decimal places. \n" );
document.write( "
Algebra.Com's Answer #113137 by scott8148(6628) You can put this solution on YOUR website! hitting the ground means that h=0\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "s is given to be 300\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "so, solve for t __ 0=-16t^2+300\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "dividing by -4 __ 0=4t^2-75 __ use quadratic formula to find t\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "t=4.33 sec (approx) \n" ); document.write( " |