Mass can travel greater than the speed of light(in terms of relativity)?

Question

if i launch a rocket at earth so that after a brief period it had accelerated to .95c(95% the speed of light)as observed from earth.now if we accelerate earth in a direction opposite to rocket(assuming that we have enough energy)at .10c,then i will have the right to say that i am at rest and only rocket is moving so that when i measure the speed of rocket it would appear to greater than c.this is not allowed by relativity...explian.

plz.explian wat u mean in detail.
if u read my question carefully, it is a seroius argument that is worth considering seriously in detail.

Answer 1

Hi addy

The only mistake you've made in your example is that in relativity velocities don't add linearly. Suppose, as you say, that from the perspective of some observer at rest a rocket is approaching you at 0.95c, and you approach the rocket at 0.1c. To find the velocity of the rocket relative to you on earth you've added the velocities linearly like this:

v = w + u
v = 0.95c + 0.1c
v = 1.05c.

In fact the velocity addition formula is:

v = (w + u) / (1 + wu/c^2)

Plug in your values and we get:

v = (0.95c + 0.1c) / (1 + 0.95c*0.1c/c^2)
v = (1.05c) / (1.095)
v = 0.96c

No paradox. :o)

Hope this helps!
The Chicken

Answer 2

The speed of light remains the same to ALL observers.

What would happen is that the Earth will appear to approach the speed of light but it will never reach it. There is an equation of relative velocity which you can easily look up and fiddle with to see how this works.

Answer 3

This makes my head spin as well. But.....you have to keep in mind that "c" IS CONSTANT. It is THE one constant. All sorts of weird things will occur to MAKE it STAY constant. Length will shorten. Masses will increase. And TIME will dilate. When time dilates, and you rework the equations, you still can't come up with an answer of "c" greater than 3 X 10 ^8 because the damn time changed and changed the values that you get when you calculate "c". That is cool as heck....the whole universe warps just to keep "c" the same.

Answer 4

You are comparing your perception of speed, versus an actual speed. For example, if you are driving down the highway at 60 mph and another car passes you at 80, according to you, that car would be traveling 20 mph. Doesn't add up.

Answer 5

The "huge Bang" is a ramification of area - which remains occurring - no longer an preliminary explosion. people who nonetheless have faith in an preliminary explosion of rely are nonetheless interior the Forties interpretation of the theory (Fred Hoyle, who made up the call huge Bang, replaced into against the theory). on the Planck Time - the earliest 2nd we are in a place to appreciate below the super Bang theory - area replaced into already increasing and the preliminary ability already existed. there replaced into no rely. rely got here slightly later, via fact the ability density began dropping. the theory of Relativity would not forbid issues to shuttle swifter than mild. if fact be told, the theory enables the existence of debris which some human beings have referred to as tachyons. they have never been mentioned and many scientists have faith that they do no longer exist, yet they do no longer seem to be forbidden. What could violate the theory is for some merchandise with mass, that travels slower than mild, to be waiting to enhance up at and previous the fee of light. which would be forbidden. on the Planck Time (and after), no rely ever moved swifter than mild in terms of its very own interior of sight area. area itself expands everywhere at as quickly as. whilst we communicate of "recession velocity" in terms of distant galaxies, we are if fact be told measuring the upward push of area interior the area between us and the distant galaxy. That galaxy isn't shifting in terms of its very own interior of sight area. even though, the addition of recent area between us and it, make it look as though it replaced into shifting. and there is no decrease as to the fee at which new area could be added between 2 gadgets. of direction, any merchandise this is satisfactorily some distance away, we can never see, via fact its mild will never get right here. As mild travels from that merchandise in direction of us, the quantity of recent area created via advance is larger than the fee at which the sunshine travels - as a result, the sunshine never gets right here. via fact of this the Observable Universe (the element we are in a place to be certain) is smaller than the full universe.

Answer 6

no,

speed of no object can be greater than that of light.
in relative terms too.
here the variable that is chaning is time.
this has been proved by Enstine.

Answer 7

"Fuzzy math, yeh......" but Einstein had it right. At least we think he is on to something. However, there is no way to establish a
mathematical equation to prove your theory. Logic gets in the way.

Answer 8

Mass can levitate

Answer 9

scientific equation or logic, here's how the constancy of the speed of light in Einstein's relativity works, in english. :p

you've probably heard that according to Einstein's relativity, we can actually go forward in time the faster we speed up, but the speed of light REMAINS constant. so common sense dictates that we should be able to reach the speed of light if we try hard enough.

actually, that's a tad bit impossible, not so much because of the energy requirements needed to actually accelerate something to the speed of light, but because the slowdown of time for you is proportionate to your acceleration. in other words, the faster you speed up, the slower time is for you. keep in mind that we go FORWARD in time here, because our perception of time goes slower, while others' perception of time more or less remains the same. in other words, for you, one second takes longer to finish than one second "in the normal perception", thus, more time actually passes than the amount of time that passes for you.

so what then? here's the catch: the amount of slowdown in your perception of time is just enough so that the speed of light REMAINS constant. remember that speed is distance travelled over time. although the speed of light should logically be less if you approach its speed, this is only through "normal time". remember that as you speed up, time slows, and thus, light has just enough "additional" time to actually fulfill its speed.

to illustrate this, imagine that we have accelerated to 185,999miles/sec, just 1mile/sec short of the speed of light (186,000miles/sec). logically, we should only be observing the speed of light to be 1mile/sec, but remember that for us, time SLOWS. therefore, our second is longer than normal. in fact, its just long enough so that light still actually moves at 186,000 miles/sec. therefore, if we actually do reach the speed of 185,999 miles/sec, our seconds are 186,000 times longer, and thus, for us, light still travels at 186,000 miles/sec.

basically, in the case you have described, you're technically moving away from the rocket at 1.05c, but remember that your time perception slows as you speed up, all other things will seem to move forward in time, therefore, for you, the "speed" of the rocket of 1.05c is not actually 1.05c, but something slower, since your perception of time of other things other than you speeds up. so for you, the rocket has LESS time to fulfill its speed of 1.05c, thus resulting in a dractically lower speed.

if you were moving at 0.10c, then a second for you is actually about 1.1 times longer than than a second if you were just standing still. therefore, your time perception of other things is about 1.1 times faster than your time perception (you're moving forward in time), and thus, the supposedly 1.05c speed of the rocket is actually about (1.05c/1.1)x in your point of view, which is obviously less than (c).

hope this helped. :)