Disturbed by speeding cars outside his workplace, Nobel laureate Arthur Holly Compton designed a speed bump (called the "Holly hurmp\") and had it installed. Suppose a 1800-kg car passes over a hump in a roadway that follows the arc of a circle of radius 21.0 m as in the figure below. r\\; @ (a) If the car travels at 27.6 km/h what force does the road exert on the car as the car passes the highest point of the hump? magnitude N direction Selact w (b) What is the maximum speed the car can have without losing contact with the road as it passes this highest point