It's actually incorrect more so than clear. Distance traveled divided by time is not velocity. It's speed, a scalar value.
Velocity has to do with the rate of change and is represented by a vector providing direction, and it's magnitude representing speed. So while speed is the simple speed an object travels at, velocity also specifies direction. A force is represented similarly to velocity and has/affects (depending on the approach, generally correct if considered affecting) mass, it's effect results in the affected body's velocity. A force is basically something affecting another entity into change. It can be summarized in push or pull efforts. Acceleration is the rate of change of speed. This is for Newtonian physics, or vectorial physics, the most common kind in CG related models. On Feb 13, 2013 9:52 PM, "olivier jeannel" <[email protected]> wrote: > Thank's César ! Now it's clear :) > > Le 13/02/2013 11:13, César Sáez a écrit : > >> >> They are completely different concepts, in short: >> >> Force = mass * acceleration >> >> Acceleration = Velocity / time >> >> Velocity = distance-traveled / time >> >> >
