Thank you all for your input, very interesting discussion emerged here.
To all my (relatively little) knowledge on the topic I agree with @PeterDonis that:
You were right, thank you for providing the correct formula.
Your detailed answer finally made me understood the whole problem I described in the first post and for that I am very thankful.
May I ask if you are studying physics or is it just your hobby?
and
Relativistic mass was first thing which came to my mind when you mentioned about the same energy input. And I must ask: isn't it true that it takes more and more energy to increase velocity when approaching the speed of light? E.g. it would cost much more energy to increase velocity...
My mistake, I am sorry; I see that now when you pointed it out. What I originally wanted to mean was that second spaceship accelerates to higher velocity (let's say 0.99c) just to be able to catch up with the first spaceship, then eventually catches up with it and then deccelerates to match the...
Hello everyone.
Below are two problems I have been thinking about lately.
Let’s consider two cases:
we have a spaceship surronded by an utter void - nothing outside which the spaceship’s pilot could refer to. The pilot (in his robotic body, allowing him to withstand enormous G-forces) turns on...