You have been called to testify as an expert witness in a trial involving a head-on collision. Car A weighs 1515 lb and wastraveling eastward. Car B weighs 1125 lb and was traveling westward at 43.0 mph. The cars locked bumpers and slid castwardwith their wheels locked for 18.5 ft before stopping. You have measured the coefficient of kinetic friction between the tires andthe pavement to be 0.750.What speed (in miles per hour) was car A traveling justbefore the collision? (This problem uses English unitsbecause they would be used in a U.S. legal proceeding.)UFmph

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