document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=502984>Question 502984</A>: <I><SPAN STYLE=\"word-break: break-all;\"> PLEASE HELP<BR>\n" );
document.write( "A runner travels 1.5 laps around a circular track in a time of 50s. the diameter of the track is 40m and its circumference is 126m. <BR>\n" );
document.write( "Find the average speed of the runner. </SPAN>\n" );
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document.write( "The circumference is 126m - that is the distance around the track, so 1.5 laps is 126 times 1.5 = 189m\r<BR>\n" );
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document.write( "So he goes 189m in 50s.  Distance = Rate * Time, Rate = Distance/Time\r<BR>\n" );
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document.write( "So his average speed is 189m/50s = 3.78 m/s </SPAN>\n" );
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