I have this confusion concerning distance and speed.
Typically, we express displacement and distance relative to a reference point, which we regard to be an unmoving location. As displacement has a direction, there is only one displacement. However, aren't there an infinite number of distances? If so, shouldn't speed, which is the rate of the change of distance have an infinite amount of possible values? (each value of speed will correspond to a certain distance)
But an object which has already moved will have followed a definite path and therefore would have a definite distance (and speed). If so, do we consider distances only for objects which have already moved? (thus, producing a definite distance)
By the way, what term do we use to refer to the rate of change of speed?(not velocity)
PS - Please write answers in a simple manner. I'm still new to physics