document.write( "Question 680163: Please help me solve this word problem using the position equation. I have solved the first part but cannot seem to get the second part! \r
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document.write( "A C-141 Starlifter flying at 25,000 feet over level terrain drops a 500-pound supply package.
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document.write( "(a) How long will it take until the supply package strikes the ground?\r
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document.write( "This is what I have come up with:
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document.write( "s=-16t^2+v0t+s0
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document.write( "Since we don't know the velocity, plug in 0 for v0t.\r
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document.write( "s=-16t^2+0+25,000
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document.write( "0=-16t^2+25,000
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document.write( "16t^2=25,000
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document.write( "t^2=25,000/16
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document.write( "square root of t^2=square root of 25,000/16
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document.write( "t approximately = 39.5 seconds\r
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document.write( "Now, here's the part I can't seem to figure out.
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document.write( "(b) The plane is flying at 500 miles per hour. How far will the supply package travel horizontally during it's descent? \n" );
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Algebra.Com's Answer #422251 by Alan3354(69443)![]() ![]() You can put this solution on YOUR website! Please help me solve this word problem using the position equation. I have solved the first part but cannot seem to get the second part! \r \n" ); document.write( "\n" ); document.write( "A C-141 Starlifter flying at 25,000 feet over level terrain drops a 500-pound supply package. \n" ); document.write( "(a) How long will it take until the supply package strikes the ground?\r \n" ); document.write( "\n" ); document.write( "This is what I have come up with: \n" ); document.write( "s=-16t^2+v0t+s0 \n" ); document.write( "Since we don't know the velocity, plug in 0 for v0t.\r \n" ); document.write( "\n" ); document.write( "s=-16t^2+0+25,000 \n" ); document.write( "0=-16t^2+25,000 \n" ); document.write( "16t^2=25,000 \n" ); document.write( "t^2=25,000/16 \n" ); document.write( "square root of t^2=square root of 25,000/16 \n" ); document.write( "t approximately = 39.5 seconds\r \n" ); document.write( "\n" ); document.write( "Now, here's the part I can't seem to figure out. \n" ); document.write( "(b) The plane is flying at 500 miles per hour. How far will the supply package travel horizontally during it's descent? \n" ); document.write( "------------ \n" ); document.write( "500 mi/hr * 39.5 sec * 1 hr/3600 sec = 5.486 miles \n" ); document.write( "----------- \n" ); document.write( "BTW, that's called \"air mail\" \n" ); document.write( " \n" ); document.write( " |