P6 A car travels around a circular track at constant speed, as shown. It is observed...

P6 A car travels around a circular track at constant speed, as shown. It is observed that the car takes 15.71 seconds to go from point A to point B along the track (exactly a quarter circle). An accelerometer mounted on the car shows that its acceleration has a constant magnitude of 7.0 m/s2. Please answer each of the following questions. For answers that require vectors, refer to the instant shown in the figure. a) What is the radius of the track? b) What is the speed of the car? c) At the moment the car passes point B, what is the direction of its acceleration? Please indicate your answer by drawing an arrow in this box

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