speed of light?

Question

what if you were traveling in your spaceship at the spede of light minus 70mph, and you threw an 80mph fastball?

would the baseball time stop and get infinitely massivce? wouldn't it be going faster than light if you were watching the spaceship and could see the ball through the windoows?

Answer 1

The speed of light is so far considered the fastest speed in the universe, although there are few experements that have proven that wrong.
http://en.wikipedia.org/wiki/Faster-than-light#Option_B:_Get_light_to_go_faster_.28Casimir_vacuum.29
http://en.wikipedia.org/wiki/Casimir_effect#Vacuum_energy
As far as the current model of universe is considered the ball cannot traver faster that c whatever the reference system. So in your case the ball would hypoteticaly be travelling AT the speed of light for someone watching outside the space ship. Its mass would be indefinate (but is considered the inertion mass, more than the real mass itself).

It's the same as the Einstain's paradox, that if you're traveling at the speed of light you cannot see yourself in the mirror (which is wrong of course). You can see yourself because the speed of light is constant speed of interaction in all referent systems (whatever the speed).

Answer 2

As an object approaches the speed of light it's mass increases then u need 10 times the energy to accelerate 1 mph. and u just cannot get there. There is only 1 thing that can obtain the speed of light and that is a collapsing sun and as it collapses the gravity acceleration increases and as it gets to the speed of light its mass is infinitive . That will generate a gravity well a black hole that may be 100 light years across and only happens in the center of a galaxy .

Answer 3

ok. Time does now no longer pass slower for speedy products. curiously to you, assuming you'll be table sure, that factor is passing slower for speedy products. If there are not any accelerations reward - each thing is consistently shifting on the equivalent speeds relative to a minimum of one yet another - then there is not any thank you to tell who's moving and who's at rest. Now the twin paradox, which you variety of paraphrased right here, has 3 accelerations in it. you start up from entertainment and accomplish an truly extreme velocity. After a time, you turn around this suggests which you sluggish down, you momentarily supply up, and you velocity as much as a extreme velocity back. as a result you attain earth and sluggish to a stop. At each acceleration, you adventure a tension which the earthbound guy or woman does not so that's sparkling who's in flow and who's at rest. as a result, you are going to return after 10 years some time strongest to hunt for out that a lots longer time has surpassed on earth. Now megastar trek assumes there's a thank you to adventure exterior of the 4 dimensional area that defines the universe - the so-ordinary as subspace. in this subspace, relativity does not persist with - that's exterior the universe rather lots - so which you'll be able to desire to pass from factor to element in a finite volume of time and, the time it takes to traverse the hollow as measured by skill of the starship's clock may be the time that elapses interior the universe - variety of no longer likely even if imperative while you're writting one hour long television episodes. there is not any data for this sort of commute use in well-known guy or woman trek.

Answer 4

The ball would leave you at 80 mph. After all, when you threw it, the difference between its speed and you was zero. Someone who measured your speed at c-70mph would see a whole different picture. They would have to apply the Lorentz transform to calculate how fast the ball left. Remember, there's no absolute thing to measure speed against.

Answer 5

no, the baseball would not reach, or pass the speed of light