You stand on a sidewalk and watch a car driving in clockwise circles at a constant speed in a nearby parking lot. Its closest position to you is 18.9 m i - 13.6 m j, and the the diameter of the circle it makes is 22 m, and it takes the car 7 s to round the circle. Here, you will examine its trajectory. (a) Since it is moving in a circle, where is the circle's center (draw a picture!)? c = i+ (b) What is the speed of the car? V = 1VI = (c) When the car is at its closest point, what is its velocity? V = li + (d) What is the centripetal acceleration of the car? ac = (e) When the car is at its closest point, what is its acceleration? a = it