document.write( "Question 809973: A point on a wheel with a diameter of 90 cm moves with a linear speed of 1.4 km/s. Find the rate at which the wheel turns in rad/s and in rev/s \n" ); document.write( "
Algebra.Com's Answer #487969 by TimothyLamb(4379)\"\" \"About 
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C = 2*pi*r = pi*0.9 ~= 2.8274334 meter
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\n" ); document.write( "1.4 km/s = 1400 meter/s
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\n" ); document.write( "wheel speed:
\n" ); document.write( "rev/s = 1400 meter/s * (1/2.8274334) rev/meter ~= 495.149 rev/s
\n" ); document.write( "rad/s = ~= 495.149 rev/s * (2*pi) rad/rev ~= 3111.111 rad/s
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