document.write( "Question 1208245: You are trying to find out how high you have
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Algebra.Com's Answer #846537 by ikleyn(52835)\"\" \"About 
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document.write( "When a massive body falls from the height h, it has velocity of \"sqrt%282gh%29\" directed vertically down, when hits the ground.\r\n" );
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document.write( "Since in your problem the coordinate axis is vertically up, you take velocity with the sign \"minus\",\r\n" );
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document.write( "so, your answer in this problem is\r\n" );
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document.write( "    \"V\" = \"-sqrt%282%2Ag%2Ah%29\" = \"-sqrt%282%2A9.8%2A15%29\" = -17.1464282 m/s.\r\n" );
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