This is what we call relativity. As we being on the platform observe one sitting in a train at rest throwing a ball vertically upward and catch it back as it comes downward, we see the ball is going along a straight line.
Now the same phenomenon is observed by us when the train is at uniform speed. We still stand on the platform which is at rest. But the man in the train is moving at uniform speed.
Now for him he experiences the same straight line movement of the ball up and down. But for us being on the platform the ball seems going along a parabolic path.
This is what we call relativity. Our frame of reference is the platform at rest. But the man in the train has his frame of reference moving at uniform speed.
it means to watch it move from an angle example:
if person A on a train was reading a book, to that person the book would not be moving, but if a person B saw the person on the train holding the book, the book would be moving, and if person C was on a different train going the opposite direction of person A, person A would seem to be moving faster than seen from the point of person B
You can use it ßy testing speed
and i dont give a f**k
nx ,js j
Motion is relative to an observer's frame of Reference.
This is called a reference point.
A tree can be used for a frame of reference for the motion of a snowboarder.
A frame of reference in physics may refer to a coordinate system or set of axes within which to measure the position, orientation, and other properties of objects in it, or it may refer to an observational reference frame tied to the state of motion of an observer. It may also refer to both an observational reference frame and an attached coordinate system as a unit. There is no particular formula to calculate this.
With respect to a state of rest or apparent rest.
Are you talking about a reference point?
Motion is relative to an observer's frame of Reference.
Motion is a relative to each other. You presume that the observer is at stable point. Which is never so. Every thing in the universe is moving and the motion is taken in relation to the observer.
Inertia is an object's resistance to change it's state of motion or rest. Motion or rest depends on the observer's frame of reference.
This is called a reference point.
reference point
Reference point
The most common frame of reference is the observer himself and, by extension, the room, lab, neighborhood, or environment in which he feels himself to be at rest.
the sun
when position of the body with respect to an observer change with time then the body are said to be in motion.
Motion is relative. That's because you can't define motion because it's relative to the observer's point of view. :D Oh & you have to have a reference frame b/c you can't answer, "are you moving?" It has to be "are you moving compared to ______."
The observers motion in relation to what he observes.