0
Imagine a person riding past in a car who looks at you says to you "I'm not moving. I am sitting still in my car. YOU are moving!"
An airline passenger flying overhead then looks down at both of you, and reports "I'm up here sitting still, and BOTH of you guys are moving!".
And an astronomer working at the observatory on the moon, taking a break and using his super-duper telescope to see what's shaking back on earth, watches the events on Earth and, and sees clearly that ALL THREE of you are moving.
Now here's the important part: all perspectives are correct ! There is no such thing as absolute motion - all mostion is relative to the observer, or the person who is measuring the movement.
Wiki User
∙ 14y ago
Add your answer:
Earn +20 pts
When is a body said to be in motion in relation to an observer?
when position of the body with respect to an observer change with time then the body are said to be in motion.
Why must motion be with respect to the oberver?
That simply means that there is NO WAY to define or measure an "absolute motion".Any experiment you do will be the SAME for different observers - in the sense that it is unaffected by relative velocities.
How do you specify frames of reference?
Frames of reference as defined for an observer : REST : If a body does not change its position with respect to the observer, then it is said to be "at rest" with respect to that observer.] MOTION : If a body continuously changes its position with repect to an observer, then it is said to be "in motion" with respect to that observer.
Why is a reference point is important when observing motion?
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.
The objects an observer uses to detect motion?
Are you talking about a reference point?
When is a body said to be in motion in relation to an observer?
when position of the body with respect to an observer change with time then the body are said to be in motion.
Motion is described with respect to a what?
With respect to a state of rest or apparent rest.
Why must motion be with respect to the oberver?
That simply means that there is NO WAY to define or measure an "absolute motion".Any experiment you do will be the SAME for different observers - in the sense that it is unaffected by relative velocities.
How do you specify frames of reference?
Frames of reference as defined for an observer : REST : If a body does not change its position with respect to the observer, then it is said to be "at rest" with respect to that observer.] MOTION : If a body continuously changes its position with repect to an observer, then it is said to be "in motion" with respect to that observer.
What affects how an observer views motion?
The observers motion in relation to what he observes.
Motion relative to observers frame of?
Motion is relative to an observer's frame of Reference.
Why is a reference point is important when observing motion?
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.
Can a body be said to be in rest or in uniform motion in same time?
Yes, it all depends on the point of view. An object can be at rest for one observer, and in uniform motion for a different observer.
An object is in motion if it changes position relative t a?
Observer.
How does the relative motion of a motorcycle affect the frequency of the sound heard by an observer on the sidewak?
as the motorcycle approaches the observer, the frequency increases.
Define rest in physics?
An object is said to be at rest if it does not change its position with respect to its surroundings.Surroundings are the places in it's neighbourhood where various objects are present.====================Opinion #2:"Rest" means that the motion of the object you're describing is exactly identicalin every way to the motion of you, the observer who is observing it.
The objects an observer uses to detect motion?
Are you talking about a reference point?
