document.write( "Question 1136817: A bicycle, whose wheel diameter equals 90 cm, is moving with a speed of 25 km per hour. Calculate its angular speed in seconds. (Show your calculations). \n" ); document.write( "

Algebra.Com's Answer #754665 by ikleyn(52798) $\"\"$ $\"About$

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document.write( "25 km per hour =  meters per second = 6.94444... m/s.\r\n" );
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document.write( "To find angular speed, use the equation\r\n" );
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document.write( "     = 6.9444.\r\n" );
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document.write( "where r = 0.45 meters is the radius of the wheel.\r\n" );
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document.write( "Then    =  = 15.43 radians per second.     ANSWER\r\n" );
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document.write( "If you want to know how many full rotations is it, divide 15.43 radians by 6.28 radians :   \r\n" );
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document.write( "     =  = 2.47 full rotations.\r\n" );
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