[填空题]
At an accident scene on a 2h6pt 6z1a h1le1shxu level road, investigatorsx*059faj,5lo dzluml measure a car’s skid mark to be 88 m long. The accident occurredxl *z5jmf 0ud,9lalo5 on a rainy day, and the coefficient of kinetic friction was estimated to be 0.42. Use these data to determine the speed of the car when the driver slammed on (and locked) the brakes. (Why does the car’s mass not matter?) m/s