Thanks, the original idea was much richer with physics phenomena, but in true Game Jam style I ran out of time and had to go with a simpler version :)
You are completely right about the acceleration! The formula for changing acceleration rather than speed is
which results in for a smooth accelration profile, which I could have implemented, but takes away a lot of agency for the player. The speed version is less realistic but all I could do with the time I had. Next time I'll dream bigger :)
Thanks for the feedback, will take it onboard.