A car is traveling at 76 mi/hr down a 3% grade on poor, wet pavement. The car’s braking efficiency is 90%. The brakes were applied 320 ft before impacting an object. The car had an antilock braking system, but the system failed 200 ft after the brakes had been applied (wheels locked/skidded). What speed was the car traveling at as it impacted the object? (Assume theoretical stopping distance, ignore air resistance, and let frl – 0.015.)