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You have been called to testify as an expert witness in a trial involving a head-on...

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Physics

You have been called to testify as an expert witness in a trialinvolving a head-on collision. Car A weighs 1515 lb and wastraveling eastward. Car B weighs 1125 lb and was traveling westwardat 41.0 mph. The cars locked bumpers and slid eastward with theirwheels locked for 18.5 ft before stopping. You have measured thecoefficient of kinetic friction between the tires and the pavementto be 0.750 . How fast (in miles per hour) was car A traveling justbefore the collision? (This problem uses English units because theywould be used in a U.S. legal proceeding.)

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