explain when an object is in motion and how motion is relative to a refrence point

Question

roadjester · Answer

Are you familiar with relative motion and reference frames?

anonymous · Answer

No!

roadjester · Answer

Ok, basically, motion is a relative concept. Say you're in a boat with no windows and there's no vibrations so you don't know if the boat is moving at all right? The only way you know the boat is moving is because the area surrounding the boat is moving in the opposite direction.

I'm going to assume you've ridden in a car before. So you're sitting in a car going north. But how do you know the car is going north. You DON'T. The reason you "know" you're going north is because the landscape around you is moving south. That is the general idea of relative motion. You don't "know" you're moving per se. You know that you're moving because whatever is around you is moving closer, or moving farther, or moving in the opposite direction.

roadjester · Answer

Does that make sense? I'm really bad at explaining relative motion.