document.write( "Question 1155074: A boat is traveling east across a river that is 112 meters wide at 8 meters per second. If the river has a northward current of 5 meters per second, what is the resultant speed of the motorboat rounded to the nearest tenth?\r
\n" ); document.write( "\n" ); document.write( "1). 9.4 m/s
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\n" ); document.write( "4). 13.0 m/s\r
\n" ); document.write( "\n" ); document.write( "This problem confused me because it is not an upstream / downstream problem. The directions, east and west, are not opposite of each other.
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Algebra.Com's Answer #777628 by ikleyn(52802) $\"\"$ $\"About$

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document.write( "Right angled triangle with one leg of 8 units directed across the river and the other leg of 5 units directed along the rive (current (!)).\r\n" );
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document.write( "The resulting speed is the HYPOTENUSE   = 9.433 m/s.\r\n" );
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document.write( "ANSWER.  Option A)\r\n" );
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\n" ); document.write( "\n" ); document.write( "It is about the vector rule of adding velocity vectors.\r
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