"It seems basic, but to animate the acceleration of particles over time (change of time over change of time) requires the particle motion to be cached in a simulation. Particular currently doesn't cache the motion paths, so it's not possible with gravity.
One option to consider is to generate an aux particle at the bounce event, and then apply negative gravity to the aux particle?"
- один из разрабов написал, вроде за два года ничего не менялось в этом плане
Спасибо большое! если с ветром не прокатит, буду так.