document.write( "Question 1137141: The kinetic energy K of a moving object varies jointly with its mass m and the square of its velocity v. If an object weighing 40 kilograms with a velocity of 15 meters per second has a kinetic energy of 1000 joules, what is the kinetic energy if the velocity is increased to 20 meters per second?\r
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Algebra.Com's Answer #754979 by ikleyn(52781)\"\" \"About 
You can put this solution on YOUR website!
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\n" ); document.write( "\n" ); document.write( "The first sentence\r
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document.write( "    \"The kinetic energy K of a moving object varies jointly with its mass m and the square of its velocity v.\"\r\n" );
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is correct and makes sense.\r
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\n" ); document.write( "\n" ); document.write( "The second sentence\r
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document.write( "    \"If an object weighing  40  kilograms with a velocity of 15 meters per second has a kinetic energy of  1000  joules\"\r\n" );
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\n" ); document.write( "\n" ); document.write( "is totally wrong, since the described object under the described condition has kinetic energy  NOT   1000  joules, \r
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\n" ); document.write( "\n" ); document.write( "but   E = \"%28mv%5E2%29%2F2\" = \"%2840%2A15%5E2%29%2F2\" = 4500 joules.\r
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\n" ); document.write( "\n" ); document.write( "It is clear from the post that its author is absolutely not familiar with the subject.\r
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