Question: A uniformly accelerated car passes three equally spaced traffic signs. The signs are separated by a distance d = 21 m. The car passes the first sign at t = 1.3 s, the second sign at t = 3.3 s, and the third sign at t = 5.0 s.
Part A: What is the magnitude of the acceleration of the car?
Please use as much detail as possible in answer!