Recent content by lucasqueiroz

Physicians Physicists oftenly state that it makes no sense to say that a certain object is moving at a certain speed if you do not have a reference point, but they do this very often. What is their referential point when they do not specify it?

Thanks for the explanation. Unfortunately I am a begineer in the study of physics and I do not understand symbols like this one Ʃ.

I have arrived at the contradictory conclusion that a body can have a positive or negative velocity and not be moving(variating it's space). It is contradictory because if it has a positive or negative velocity it must be moving (variating it's space) since velocity is a variation in space, as...