Thread 'How to find path if we only know velocity (with out common formulas)?' Hi there! I invented the trouble And that i test to solve it: Enable we only know velocity of transferring particle: ##v(t)## from ##t=a## to ##t=b##. Gable roofs are straightforward and simple to create. These roofs https://gabletoppak.com/why-i-switched-to-water-in-a-sustainable-box/