Motion

Motion is a change in position. Imagine a basketball bouncing, a kite soaring, a parked car, and a boy running.

The basketball, kite, and boy are all in motion because their positions are changing. But the parked car? It stays in the same spot, so it's at rest.

Now, picture a group of kids sitting quietly. At first glance, they don’t seem to be moving. But what if we zoom out? They’re actually on a moving bus.

So, are they at rest or in motion? Compared to each other, they’re at rest since their positions relative to one another don’t change. But compared to the trees outside, they are moving.

This is the concept of frames of reference, which are objects or backgrounds that help us observe motion.

Here’s another example. Imagine a dog inside a moving car. To someone outside, the dog is in motion because he moves with the car. But to a person inside, the dog seems to be at rest.

That is why motion always depends on your point of view or frame of reference.