document.write( "Question 211164: The height of an object tossed upward with an initial velocity of 104 feet per second is given by the formula h = -16t^2 + 104 t, where h is the height in feet and t is the time in seconds. Find the time required for the object to return to its point of departure \n" ); document.write( "
Algebra.Com's Answer #159513 by Earlsdon(6294)\"\" \"About 
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You are trying to find the time, t, at which the height, h, of the object is zero (initial height) again. I say again because it starts out at h = 0.
\n" ); document.write( "So you set h = 0 and solve for t.
\n" ); document.write( "\"-16t%5E2%2B104t+=+0\" Factor t from the left side.
\n" ); document.write( "\"t%28-16t%2B104%29+=+0\" So...
\n" ); document.write( "\"t+=+0\" (Initial condition) or:
\n" ); document.write( "\"-16t%2B104+=+0\" and...
\n" ); document.write( "\"-16t+=+-104\" Divide both sides by -16.
\n" ); document.write( "\"t+=+6.5\"seconds.
\n" ); document.write( "The oject returns to its point of departure in 6.5 seonds.
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