What are space-time coordinates?

A coordinate system is a way of representing space and time using numbers to represent points. We assign a set of three numbers, (x,y,z), to characterize points in space, and one number, t, to characterize a point in time. Combining these, we have general space-time coordinates: (x,y,z,t).

Is it possible that they may not be simultaneous in a different inertial frame?

Events that are simultaneous in one inertial frame can never be simultaneous in another different inertial frame. A. Two events that are simultaneous in one inertial frame must also be simultaneous in all inertial frames.

Is it possible for such an object to have zero velocity in some inertial reference frame and not in another?

The answer to that is, clearly, “no” because we can have frames that are in motion relative to each other.

Does time depend on frame of reference?

In the Special Theory of Relativity, Einstein determined that time is relative—in other words, the rate at which time passes depends on your frame of reference. The faster a clock moves, the slower time passes according to someone in a different frame of reference.

How are space and time the same?

Thus, space and time are effectively interchangeable, and fundamentally the same thing (or at least two different sides of the same coin), an effect which becomes much more noticeable at relativistic speeds approaching the speed of light.

Is simultaneity possible?

Description. According to Einstein’s special theory of relativity, it is impossible to say in an absolute sense that two distinct events occur at the same time if those events are separated in space.

Is there such thing as 0 velocity?

Because the person always returns to the original position, the motion would never result in a change in position. Since velocity is defined as the rate at which the position changes, this motion results in zero velocity.

Would you age traveling at the speed of light?

We do not age slower if we go at the speed of light but the time stops when we go at the speed of light. The reality is a object having a definite mass cannot achieve speed of light because mass is dependent on speed and when the object reaches near the speed of light we need infinite force to keep it accelerating.