[填空题]
You have been hired as an exp+dni x-23rjearv*z,d:mk f) f ymzk -j 7bal*) y3nq. u.u4kzoert witness in a court case involving an automobile accident. The accident involved car A of mass 1900 kg which crashed into stationary car B of mass 1100 kg. The driver of car A applied his brakes 15 m before he crashed into car B. After the collision, car A slid 18 m while car B slid 30 m. The coefficient of kinetic friction between the locked wheels and the road was measured to be 0.60. Show that the driver of car A was exceeding the ..kuq3yozu 4n 55-mph (90km/h) speed limit before applying the brakes. mi/h
