document.write( "Question 546790: A stationary police car spots a vehicle travelling at speed. The police car accelerates flat out to apprehend suspect.
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document.write( "How fast in km/h would the police car have to travel to catch up to and match speeding cars speed within 3.3 kilometers if the speeding car is travelling at 144km/h?
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Algebra.Com's Answer #356135 by ankor@dixie-net.com(22740)![]() ![]() You can put this solution on YOUR website! A stationary police car spots a vehicle traveling at speed. \n" ); document.write( "The police car accelerates flat out to apprehend suspect. \n" ); document.write( "How fast in km/h would the police car have to travel to catch up to and match speeding cars speed within 3.3 kilometers if the speeding car is traveling at 144km/h? \n" ); document.write( ": \n" ); document.write( "Let s = speed required by the cop to catch the unfortunate driver \n" ); document.write( ": \n" ); document.write( "The average speed of an car accelerating from 0 = half the final speed \n" ); document.write( ": \n" ); document.write( "Find the time it takes the speeding car to cover 3.3 km \n" ); document.write( " \n" ); document.write( ": \n" ); document.write( "therefore a distance equation, d = speed * time \n" ); document.write( ".5s(.0229) = 3.3 \n" ); document.write( ".01146s = 3.3 \n" ); document.write( "s = \n" ); document.write( "s = 288 km/hr \n" ); document.write( " \n" ); document.write( " |