Thread 'How to find route if we only know velocity (without popular formulation)?' Hello there! I invented the situation and I attempt to solve it: Permit we only know velocity of shifting particle: ##v(t)## from ##t=a## to ##t=b##. The lifetime of a roof depends on how nicely it has been https://gabletoppak.com/from-plastic-bottles-to-gabletop-cartons-a-step-toward-solving-the-plastic-pollution-crisis/