metalicarulez
New Member
- Joined
- Dec 9, 2003
- Messages
- 9
ok i'm totally lost here how can you tell which one is correct if you don't even know where your heading for sure?
-
Looking for HSC notes and resources? Check out our Notes & Resources page
little question on space (1 Viewer)
- Thread starter metalicarulez
- Start date
...
^___^
wtf..
where did u find this question?
where did u find this question?
Dash
ReSpEcTeD
Yeh I know what you mean!Originally posted by metalicarulez
ok i'm totally lost here how can you tell which one is correct if you don't even know where your heading for sure?
All possibilities are potentially a solution when the direction of the shaceship is not known for certain.
This question is fuxed... who gave it to you?
metalicarulez
New Member
- Joined
- Dec 9, 2003
- Messages
- 9
its a jacaranda question ~
tryin to finish the last topic blah i'm going alrite then this pops up and im like err.. wtf ?
tryin to finish the last topic blah i'm going alrite then this pops up and im like err.. wtf ?
Dash
ReSpEcTeD
Screw it and go to the next one I say
metalicarulez
New Member
- Joined
- Dec 9, 2003
- Messages
- 9
ok heres the next one
How could you tell if your spacecraft, far from any planet or star, is standing still or travelling with a uniform velocity? What is the name given to this idea?
ermm wot do i do here
is this the answer : "you cannot tell because as the principle of relativity states, you cannot perform any mechanical experiment or obnservation that would reveal to you whether you were moving with uniform velocity or standing still. The idea is called the principle of relativity."
How could you tell if your spacecraft, far from any planet or star, is standing still or travelling with a uniform velocity? What is the name given to this idea?
ermm wot do i do here
is this the answer : "you cannot tell because as the principle of relativity states, you cannot perform any mechanical experiment or obnservation that would reveal to you whether you were moving with uniform velocity or standing still. The idea is called the principle of relativity."
Constip8edSkunk
Joga Bonito
yeah stupid wordings... assuming it means the most correct statement based on observation and given info for the first q, D contradicts the original info( one says travelling away, one says towards pluto) Both B and C are possiblities taht you cannot determine without reference. (but hang on, if you are travelling towards pluto, you arent stationary...from an external reference pt, but from the ship, you are always stationary...) so if this appeared in an exam, id choose A... but STUPID QUESTION.
as for relativity. the concept is that there is no absolute frame where all things can be jusdged. they are all relative depending on the observer's frame of reference
eg. imagine a boy was in a car travelling in a constant speed, v, past a girl standing still, as it appears to an third person. to the boy, he would appear to be stationary and the girl moving past him at 'v', while the girl sees the boy moving past her at 'v'. all these observations are valid, as they are all in an inertial frame of reference(non-accelerating frame). this could mean that the observer within an inertial frame is stationary or moving at a constant velocity(depending on the perspective)
back to the point, relative motion are determined by reference points. from the previous example, the boy would compare the car's interior with the girl to judge that the girl is moving while the girl would relate the boy with the footpath or her surroundings to determine that the boy is moving.
it follows that if there are no reference points, then you cannot judge your motion as motion is a RELATIVE quality.
as for relativity. the concept is that there is no absolute frame where all things can be jusdged. they are all relative depending on the observer's frame of reference
eg. imagine a boy was in a car travelling in a constant speed, v, past a girl standing still, as it appears to an third person. to the boy, he would appear to be stationary and the girl moving past him at 'v', while the girl sees the boy moving past her at 'v'. all these observations are valid, as they are all in an inertial frame of reference(non-accelerating frame). this could mean that the observer within an inertial frame is stationary or moving at a constant velocity(depending on the perspective)
back to the point, relative motion are determined by reference points. from the previous example, the boy would compare the car's interior with the girl to judge that the girl is moving while the girl would relate the boy with the footpath or her surroundings to determine that the boy is moving.
it follows that if there are no reference points, then you cannot judge your motion as motion is a RELATIVE quality.