A car is traveling at 95.0 km/hr when it collides with a stone wall. The car comes to rest after the first 30.0 cm of the car is crushed. What was the average horizontal force acting on a 68.1 kg driver while the car came to rest? If 5 cardboard boxes, each 1.25m wide and filled with sand had been placed in front of the wall, and the car moved through all that sand before coming to rest, what would the average force acting on the driver have been then?