Question

Day 2

$\Large{\underline{\underline{\red{Physics \: Challenge:-}}}}$
If you are in a train that is going with the speed of light, then you throw a stone forward. wouldn't the stone has moved with more than the speed of light?

Give answer using physics concepts not your logic. I need complete explanation not meaningless answers . I have no problem to report your answers.​

Answer 1

Answer:

No, because your measuring devices say your velocity is zero, so if you throw the stone at 30 mph then your devices will say the stone is traveling at 30 mph relative to you.

You can't think of this frame as an absolute frame. Not only do your clocks and rulers change, but your zero points for those measuring devices as well.

Look at the speedometer on your car. Imagine that 100 mph is the speed of light. As you begin to accelerate the division marks (clocks and rulers) change proportionally to energy gained from changes in velocity.

Now rotate the dial so that the zero point follows the needle. Notice two things. 1) 100 mph is still 100 mph and as unobtainable as it always was. 2) your velocity still reads as zero just as it does right now despite your movement through space.

This is why light is c in every frame regardless of velocity, because the velocity component is already compensated for as your zero points shift.

You can never reach the speed of c using your own measuring devices, it is impossible because your zero points shift proportionally to energy and you will always read as stationary. 100 mph will forever be 100 mph and out of reach.

This is not to say you can't reach what was once 100 mph before your zero points shifted, just that you will never know it, ever.

Explanation:

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