106. assignment (acceleration)

A car accelerated from 5.3 mph (0.44704 m / s) to some final velocity over 9.0 s. Then, for the next 20.5 s the car was driving at this final velocity. The total distance traveled by the car over the entire time turned out to be

347.8 m.

 

What was acceleration of the car over the first 9.0 s?

Video description:
https://youtu.be/HYlGCt5Uiv4