This has me concerned, as I'm due to undertake a train trip soon. If I'm walking towards the back of a moving train, and then turn around and start walking towards the front, will I suddenly fall over?
Not necessarily, but according to The Inquisitor you will FEEL the acceleration:
Now, initate a 180deg turn so you are flying directly 'out' of the wind. In the time it takes to make the turn, the aircraft will accelerate (the quicker the turn, the greater the acceleration) from zero to 200kts groudspeed and both you, and the aircraft, will FEEL the acceleration
