Questions about motion

When studying the motion of an object, the most basic questions we would like to ask are things like:

In order to answer these questions, we need to know the object's location in space at each instant in time, so that we can keep track of how it is changing as time progresses. If we find that the object's location in space is not changing with time, that is, if it stays at the same place, then we can say that it is “at rest,” while otherwise we can say that it is “moving.” If the object is “moving,” we can specify its direction of motion by saying things like “it is moving to the left” or “it is moving to the right,” and we can figure out its speed by determining by how much its location in space is changing per unit time.

Once we have these basic questions under control, we can then start to ask more advanced questions like: