During a high-speed chase, an 1100-kg sports car traveling at a speed of 160 km/h just los...

During a high-speed chase, an 1100-kg sports car traveling at a speed of 160 km/h just loses contact with the road as it reaches the crest A of a hill, (a) Determine the radius of curvature ρ of the vertical profile 0f the road at A, (b)Using the value of ρ found in part a, determine the force exerted on a 70-kg driver by the seat of his l400-kg car as the car, traveling a constant speed of 80 km/h, passes through A.