(10%) Problem 3: If a car takes a banked curve at less than a given speed, friction is needed to keep it from sliding toward the inside of the curve (a real problem on icy mountain roads). '9 50% Part (3) Calculate the minimum speed, in meters per second, required to take a 120 m radius curve banked at 17\" so that you don't slide inwards, assuming there is no friction. "min: [8.54 I/ Correct! ' p 33 50% Part (b) What is the minimum coefcient of friction needed for a frightened driver to take the same curve at 22 kin/h