document.write( "Question 1197770: Using the following formula:\r
\n" ); document.write( "\n" ); document.write( "T = 7000 w/d^2 (1/v - 1/u)\r
\n" ); document.write( "\n" ); document.write( "A projectile of weight w lbs. and diameter d in., with muzzle velocity of u ft.\r
\n" ); document.write( "\n" ); document.write( "Determine velocity v, after T sec.\r
\n" ); document.write( "\n" ); document.write( "Unsure how to solve.\r
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Algebra.Com's Answer #831275 by MathTherapy(10557)\"\" \"About 
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\n" ); document.write( "Using the following formula:\r
\n" ); document.write( "\n" ); document.write( "T = 7000 w/d^2 (1/v - 1/u)\r
\n" ); document.write( "\n" ); document.write( "A projectile of weight w lbs. and diameter d in., with muzzle velocity of u ft.\r
\n" ); document.write( "\n" ); document.write( "Determine velocity v, after T sec.\r
\n" ); document.write( "\n" ); document.write( "Unsure how to solve.
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document.write( "\"matrix%281%2C3%2C+Td%5E2uv%2C+%22=%22%2C+%227%2C000%22wu+-+%227%2C000%22wv%29\" ---- Cross-multiplying\r\n" );
document.write( "\"matrix%281%2C3%2C+Td%5E2uv+%2B+%227%2C000%22wv%2C+%22=%22%2C+%227%2C000%22wu%29\" ---- Adding 7,000wv to both sides\r\n" );
document.write( "\"matrix%281%2C3%2C+v%28Td%5E2u+%2B+%227%2C000%22w%29%2C+%22=%22%2C+%227%2C000%22wu%29\" ---- Factoring out v on left side\r\n" );
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document.write( " ----- Dividing both sides by \"Td%5E2u+%2B+%227%2C000%22w\" to get the value of v (velocity), in \r\n" );
document.write( "                                         terms of d (diameter), T (time, in seconds), u (muzzle velocity), and w (weight).
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