Questions tagged [relative-motion]
Use this tag for questions related to how objects move relative to other objects dependent on your frame of reference, and how this applies to special relativity.
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Cartesian basis vectors in polar coordinates
I'm trying to solve a problem which includes a spinning object and I want to find it's velocity vector with respect to an object moving in a straight line on the the x axis with constant velocity.
I ...
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How would one compute the path of an particle's motion from forces defined in different frames of reference?
I'm trying to write a computer program to render and play-back the path of a particle existing in 2D space given all forces acting on said particle. This is relatively easy to do if all forces are ...
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Question based on relative motion in two dimension
I came across this problem in my work book.
A hunter is riding on an elephant of height $4$ $ m$ moving in straight line with uniform speed of $2$ $ m/s$. A deer running with a speed $V$ at a ...
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Relativity of simultaneity - under what conditions would two events happen simultaneously for frames $S$ and $S'$ when $S'$ is moving relative to $S$?
I feel like I have a fundamental confusion with the following exercise:
I'm confident with my answer in (a), which is that $B$ must be within the light cone of $A$, or that $B$ is causally connected ...
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Accelerating towards a photon
What will be the relative speed and motion between me and a photon if I would have accelerated towards a photon that is moving away from me?
Would it get away from at a slower velocity relative to me, ...
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Changing mass and relative motion
Sand is pouring vertically on a cart at J [kg/sec], from negligable hight. The cart is standing on top of a frictionless surface. What force F do we have to apply to the cart for it to move at a ...
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Are these two systems equivalent?
1) a charge is placed next to a conducting wire with an electrical current being carried through it.
2) a moving charge is placed next to a conducting wire such that it is traveling at the same ...
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The mechanics of retention of velocity/acceleration when an object is dropped from a moving body
This might seem a stupid question but please help me out because I'm very confused.
We say that when an object is dropped from a moving body (moving with constant acceleration $a$) It has the ...
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Waves and relative motion
Consider a situation in which a charged object which is colorless in a stationary (w.r.t observer) frame is accelerating in a circular path such that it radiates EM waves of specific frequency (...
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Simple Rotating frame of reference
I have a car moving in straight line with certain time-varying acceleration and there is another car moving in a curvilinear way along some curved path with some time-varying acceleration. The ...
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Is it possible to derive the Doppler effect formulas for sound using relative velocity?
Is it possible to derive the Doppler effect formulas for sound using relative velocity? If possible can anyone please explain it to me.
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Relative effects of forces
Excuse me for my ignorance but I really couldn't find a solution. According to Einstein, every happening is possible to describe by both of interacted objects.
Is there any other way to describe the ...
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Details on analyzing relative motion
I have been viewing some videos and reading some articles about Relativity and relative motion. My search abilities seem to be rather lacking. I am looking for articles, questions, and/or forums ...
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Measuring the speed of an object
If I understand correctly someone said (Einstein?) that all motion is relative. However, if it were possible; given that light always travels in a vacuum at a fixed speed, could all other motion be ...
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Why is direction of train like this for car?
This is an image of a train and a car. T is the train moving towards - $x$ axis and C is the car moving towards $+ y$axis.
So, my teacher made a resultant velocity with $-5\hat i$ and $-20\hat j$. ...
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