<PRE><B>Question 442606</B>
how long does it take for 2 cars traveling toward each other at 40mph to go 500 feet?
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Closing rate is 80 mph
time = distance/rate
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time = [500ft]/[80miles/hr] 
= [500ft][1 mile/5280ft]*[1 hr/80miles]
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= [500*1*1]/[5280*80] hrs
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= 0.0012 hrs
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Cheers,
Stan H.</PRE>