Thread 'How to define route if we only know velocity (without having prevalent formulation)?' Howdy! I invented the trouble and I check out to unravel it: Allow we only know velocity of shifting particle: ##v(t)## from ##t=a## to ##t=b##. (Sports) To block (a competitor or opponent) from advancing, In particular https://gabletoppak.com/why-i-switched-to-water-in-a-sustainable-box/