Question

Have you ever experienced that the train in which you are sitting appears to move even when the train is at rest? Discuss.

Answer 1

Yes, While we are sitting in a still train, it appears to be in motion.

Because

1. Motion is a change in an object's position relative to a given observer during a certain interval of time.
2. One object is said to be at rest if the position of that object doesn't change with respect to time.
3. The motion and rest of an object are relative to either frame of reference of the observer or to another frame of reference.
4. So, the rest and motion of an object depend on the frame of reference. (Frame of reference is an arbitrary set of axes with reference to which the position to the motion of something is described or physical laws are created.)
5. Also, rest and motion are relative terms ( that is if the observer is at rest in his own frame of reference, but he may be moving in another observer's frame of reference.)
6. So, The train is at rest with respect to the person sitting inside the train.
7. The train appears to be in motion, with respect to the moving object outside the train.
8. Since the motion is relative, For the person sitting on the train it appears as if those objects are at rest and the train is moving.

Hence, We feel that the train at which we are sitting appears to move even though the train is at rest.