4) You are the investigator for a collision in which a moving car (A) struck a parked car (B). You deduce that all four of car B's wheels were locked and, from skid marks, you can see that car B slid 20 ft after the impact. You have estimated the coefficient of kinetic friction between B's tires and the road to be ĆĀ¼ = 0.8 and the coefficient of restitution to be e = 0.2. The cars' weights are WĆ¢āĀ = 3,400 lb and WĆ¢āā = 1,960 lb. What was the velocity of car A just before the impact? (Assume that only one impact occurred.)