All Questions
13
questions
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Accelerating body in a non-inertial frame of reference
If a body is subjected to a force, can I find a non-inertial frame of reference in which the body is not accelerating?
- 21
2
votes
1
answer
110
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Flying mosquito problem [duplicate]
Let's say there is a car and its doors and windows are closed. Basically it is a closed space inside. There is a mosquito hovering right in the center of closed space of the car. While doing so the ...
- 39
2
votes
3
answers
553
views
If I accelerate through space, can I say all stars gain kinetic energy?
Suppose I accelerate through empty space. Say all stars are small heavy marbles I can use to do work with by means of their velocity. Say I can let them smash into some generator that turns their ...
1
vote
1
answer
169
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Acceleration and geodesics in General Relativity
Consider this situation:
A) An aeroplane travels a distance from point A to point B which are located on the opposite sides of the Earth. The aeroplane has taken the shortest possible distance to ...
- 159
0
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3
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419
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If Earth accelerates, what reference frame is its acceleration relative to?
It should be a very fundamental thing, a very simple question. But there's something I want to understand.
We know that when we throw an apple vertically upwards, it experiences a force of gravity ...
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1
vote
3
answers
191
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If there was but one object in the universe, can it be accelerating or not accelerating?
If there is only a single (material) object in the universe does it still make sense to speak of it as accelerating or not accelerating?
I believe it might be an equivalent question to ask whether it ...
user220934
0
votes
1
answer
300
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Differentiating linear and non-linear motion
If there is a Person sitting in a vehicle which is moving, how could he find out whether it's in motion and if he figures that out, how does he find out whether it's accelerated or non-accelerated?
2
votes
1
answer
424
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To what extent is acceleration relative?
I realize there are answers to my question many places across the internet and many places on this site, but from what I have seen, most of them either involve terms I don't know or assume you can use ...
- 277
1
vote
2
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295
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A question regarding inertial reference frame
We define a non-inertial reference as a reference frame which is accelerating.
But the question is if it is the reference frame itself what is it accelerating with respect to?
For simplification ...
- 31
1
vote
6
answers
379
views
How can a particle which is not moving have an acceleration?
Suppose a rod is rotating around a fixed point located at an extreme point of it and there are two points on it. One, somewhere in the middle and the other at the other extreme.Call them $A$ and $B$ ...
- 1,770
11
votes
3
answers
7k
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How can you accelerate without moving?
I know this question has been asked in other forms, generally regarding the balance of forces. This time I want to focus on motion. I've got a laser accelerometer on my desk. It tells me that I'm ...
user32023
0
votes
2
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1k
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One dimensional motion - Why does a ball fall back in my hands when I throw it up in a moving bus? [duplicate]
Suppose you are moving in a bus and you throw a ball upwards. Why does it always land in your hand and does not fall behind you? The bus is moving with a uniform velocity in a straight direction.
Now ...
- 125
1
vote
2
answers
406
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What is the relative acceleration of a projectile fired at in a low gravity vacuum?
This question is to end an old argument.
Given a (space) vehicle with an acceleration of X, and projectile with an acceleration of 2X (rocket, not bullet), what would the relative acceleration of the ...
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