Thread 'How to define route if we only know velocity (without having common formulation)?' Hello there! I invented the problem and I consider to solve it: Permit we only know velocity of relocating particle: ##v(t)## from ##t=a## to ##t=b##. There is apparently no technique for simplifying or rearranging the integral. https://gabletoppak.com/bioplastics-greenwashing-or-genuine-solution-the-truth-behind-the-hype/