document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1199669>Question 1199669</A>: <I><SPAN STYLE=\"word-break: break-all;\"> You own a vehicle that according to the owners manual has a speedometer calibrated to work with tires of radius 14 inches. Suppose that you put oversize tires of radius 16 inches on this truck, and then drive along a stretch of the interstate highway where the speed limit is 70 mph. If your speedometer reads 65 mph, are you obeying the law or are you speeding? </SPAN>\n" );
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document.write( "The speed is proportional to the circumference of the tires, which is proportional to the radius of the tires.  If the radius is increased by a factor of 16/14 = 8/7, the speed is increased by a factor of 8/7.<br><BR>\n" );
document.write( "If the speedometer reads 65mph, the actual speed is (8/7)*65, which is greater than 70.<br><BR>\n" );
document.write( "ANSWER: you are speeding<br><BR>\n" );
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