A racetrack is constructed such that two arcs of radius 2R at A and R at B are joined by two stretches of straight track. A driver travels at constant speed for a complete lap.
  1. Is the tangential acceleration at A larger, smaller or the same as at B?
  2. Is the centripetal acceleration at A larger, smaller or the same as at B?
  3. Is the angular speed at A larger, smaller or the same as at B?

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