Re: Difference between a force and a velocity ?

[Alok]

Even then, we are not computing the displacement between the first and the last frame only (which, of course, will lead to the wrongful observation that no displacement has taken place yielding zero velocity). In this case the displacement at the last frame will be calculated between the last and the second last frame. I think what Steven is saying makes sense. On 13/02/2013 3:03 PM, Matt Lind wrote: Yes it’s important because there are many equations which rely on velocity as a variable, not speed.   If you’re computing a speed, you need to accumulate the distance travelled over time.  If you’re computing a velocity, you’re working with deltas.   In more explicit terms, if you’re computing motion vectors, you’re comparing the current frame to the previous frame.  If you’re computing speed, you’re comparing the current frame to the first frame.  How you code for those scenarios is vastly different.     Matt