# Questions tagged [relative-motion]

The tag has no usage guidance.

447 questions
Filter by
Sorted by
Tagged with
4answers
1k views

### If you are sitting completely still inside of a moving car are you at rest?

My teacher and I had an argument in class where I stated that motion is undefined without a reference point and that you could just as easily claim that the road is moving backwards at the opposite ...
0answers
350 views

### 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 ...
2answers
181 views

### Inertial force in a bus [duplicate]

While i am standing in a bus that is accelerating an inertial force is acting on me in the direction opposite of acceleration (I understand that). But, what is the magnitude of that force.I thought it ...
2answers
133 views

### How can I visualize the center of mass (center of momentum) frame?

I know that the CM frame is the frame in which the total momentum of the system adds up to zero. For example, if I imagine two bodies m1 and m2, with m1 = m2, one moving at the speed v1 = v and the ...
1answer
148 views

### Physics of the tablecloth trick- why top objects tip over

In the tablecloth trick where the cloth is pulled off, with dishes etc. on top of it, I was wondering why is it that tall objects tend to tip forward? Let's say that we are pulling the cloth to the ...
1answer
77 views

### relative velocities

If two objects are moving relative to the horizontal and you have the real angle between the horizontal and the direction of travel of one object, how does this real angle differ from the angle ...
0answers
60 views